55616457 has 8 divisors (see below), whose sum is σ = 79859584. Its totient is φ = 34225488.

The previous prime is 55616447. The next prime is 55616479. The reversal of 55616457 is 75461655.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55616457 - 2¹⁴ = 55600073 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 1426063 = 55616457 / (5 + 5 + 6 + 1 + 6 + 4 + 5 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55616447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 712993 + ... + 713070.

It is an arithmetic number, because the mean of its divisors is an integer number (9982448).

Almost surely, 2^55616457 is an apocalyptic number.

It is an amenable number.

55616457 is a deficient number, since it is larger than the sum of its proper divisors (24243127).

55616457 is a wasteful number, since it uses less digits than its factorization.

55616457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426079.

The product of its digits is 126000, while the sum is 39.

The square root of 55616457 is about 7457.6441990752. The cubic root of 55616457 is about 381.7107927684.

The spelling of 55616457 in words is "fifty-five million, six hundred sixteen thousand, four hundred fifty-seven".