77056452 has 72 divisors (see below), whose sum is σ = 219378432. Its totient is φ = 22593600.

The previous prime is 77056433. The next prime is 77056471. The reversal of 77056452 is 25465077.

77056452 is a `hidden beast` number, since 7 + 7 + 0 + 5 + 645 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (77056433) and next prime (77056471).

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 9138 + ... + 15414.

Almost surely, 2^77056452 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 77056452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109689216).

77056452 is an abundant number, since it is smaller than the sum of its proper divisors (142321980).

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

77056452 is a wasteful number, since it uses less digits than its factorization.

77056452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6329 (or 6324 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 36.

The square root of 77056452 is about 8778.1804492731. The cubic root of 77056452 is about 425.5360286126.

The spelling of 77056452 in words is "seventy-seven million, fifty-six thousand, four hundred fifty-two".