755521140 has 192 divisors, whose sum is σ = 2462503680. Its totient is φ = 171642880.

The previous prime is 755521139. The next prime is 755521141. The reversal of 755521140 is 41125557.

It is an interprime number because it is at equal distance from previous prime (755521139) and next prime (755521141).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 755521098 and 755521107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (755521141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3242464 + ... + 3242696.

It is an arithmetic number, because the mean of its divisors is an integer number (12825540).

Almost surely, 2^755521140 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 755521140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1231251840).

755521140 is an abundant number, since it is smaller than the sum of its proper divisors (1706982540).

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

755521140 is a wasteful number, since it uses less digits than its factorization.

755521140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307 (or 271 counting only the distinct ones).

The product of its (nonzero) digits is 7000, while the sum is 30.

The square root of 755521140 is about 27486.7448054512. The cubic root of 755521140 is about 910.7843095364.

Adding to 755521140 its reverse (41125557), we get a palindrome (796646697).

The spelling of 755521140 in words is "seven hundred fifty-five million, five hundred twenty-one thousand, one hundred forty".