77457532 has 12 divisors (see below), whose sum is σ = 135631440. Its totient is φ = 38705696.

The previous prime is 77457511. The next prime is 77457533. The reversal of 77457532 is 23575477.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77457533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3408 + ... + 12904.

It is an arithmetic number, because the mean of its divisors is an integer number (11302620).

Almost surely, 2^77457532 is an apocalyptic number.

It is an amenable number.

77457532 is a deficient number, since it is larger than the sum of its proper divisors (58173908).

77457532 is a wasteful number, since it uses less digits than its factorization.

77457532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11540 (or 11538 counting only the distinct ones).

The product of its digits is 205800, while the sum is 40.

The square root of 77457532 is about 8800.9960799900. The cubic root of 77457532 is about 426.2730584958.

The spelling of 77457532 in words is "seventy-seven million, four hundred fifty-seven thousand, five hundred thirty-two".