77494057 has 4 divisors (see below), whose sum is σ = 77656320. Its totient is φ = 77331796.

The previous prime is 77494049. The next prime is 77494063. The reversal of 77494057 is 75049477.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 75049477 = 29 ⋅2587913.

It is a cyclic number.

It is not a de Polignac number, because 77494057 - 2³ = 77494049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77494097) 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, 80413 + ... + 81370.

It is an arithmetic number, because the mean of its divisors is an integer number (19414080).

Almost surely, 2^77494057 is an apocalyptic number.

It is an amenable number.

77494057 is a deficient number, since it is larger than the sum of its proper divisors (162263).

77494057 is a wasteful number, since it uses less digits than its factorization.

77494057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162262.

The product of its (nonzero) digits is 246960, while the sum is 43.

The square root of 77494057 is about 8803.0708846402. The cubic root of 77494057 is about 426.3400508051.

The spelling of 77494057 in words is "seventy-seven million, four hundred ninety-four thousand, fifty-seven".