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53151830 = 2547113089
BaseRepresentation
bin1100101011000…
…0100001010110
310201000101121022
43022300201112
5102101324310
65135121142
71213532414
oct312604126
9121011538
1053151830
1128003836
12159731b2
13b01cbb4
1470b82b4
1549eda55
hex32b0856

53151830 has 16 divisors (see below), whose sum is σ = 97709760. Its totient is φ = 20808192.

The previous prime is 53151821. The next prime is 53151841. The reversal of 53151830 is 3815135.

It is a self number, because there is not a number n which added to its sum of digits gives 53151830.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 56075 + ... + 57014.

It is an arithmetic number, because the mean of its divisors is an integer number (6106860).

Almost surely, 253151830 is an apocalyptic number.

53151830 is a deficient number, since it is larger than the sum of its proper divisors (44557930).

53151830 is a wasteful number, since it uses less digits than its factorization.

53151830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113143.

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 53151830 is about 7290.5301590488. The cubic root of 53151830 is about 375.9869233041.

Adding to 53151830 its reverse (3815135), we get a palindrome (56966965).

The spelling of 53151830 in words is "fifty-three million, one hundred fifty-one thousand, eight hundred thirty".

Divisors: 1 2 5 10 47 94 235 470 113089 226178 565445 1130890 5315183 10630366 26575915 53151830