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53752140 = 223351321931
BaseRepresentation
bin1100110100001…
…1000101001100
310202010220002000
43031003011030
5102230032030
65200032300
71221612531
oct315030514
9122126060
1053752140
1128383862
1216002690
13b1a0200
1471d2d88
154abb860
hex334314c

53752140 has 288 divisors, whose sum is σ = 196761600. Its totient is φ = 12130560.

The previous prime is 53752133. The next prime is 53752141. The reversal of 53752140 is 4125735.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53752141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1733925 + ... + 1733955.

It is an arithmetic number, because the mean of its divisors is an integer number (683200).

Almost surely, 253752140 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53752140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98380800).

53752140 is an abundant number, since it is smaller than the sum of its proper divisors (143009460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53752140 is a wasteful number, since it uses less digits than its factorization.

53752140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 53752140 is about 7331.5850946436. The cubic root of 53752140 is about 377.3971241386.

Adding to 53752140 its reverse (4125735), we get a palindrome (57877875).

The spelling of 53752140 in words is "fifty-three million, seven hundred fifty-two thousand, one hundred forty".