65751552 has 120 divisors (see below), whose sum is σ = 200016960. Its totient is φ = 20736000.

The previous prime is 65751551. The next prime is 65751557. The reversal of 65751552 is 25515756.

It is a happy number.

65751552 is a `hidden beast` number, since 6 + 57 + 51 + 552 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (65751551) 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 11 ways as a sum of consecutive naturals, for example, 87177 + ... + 87927.

It is an arithmetic number, because the mean of its divisors is an integer number (1666808).

Almost surely, 2^65751552 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 65751552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100008480).

65751552 is an abundant number, since it is smaller than the sum of its proper divisors (134265408).

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

65751552 is a wasteful number, since it uses less digits than its factorization.

65751552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794 (or 775 counting only the distinct ones).

The product of its digits is 52500, while the sum is 36.

The square root of 65751552 is about 8108.7330699685. The cubic root of 65751552 is about 403.6162745386.

The spelling of 65751552 in words is "sixty-five million, seven hundred fifty-one thousand, five hundred fifty-two".