55358657 has 4 divisors (see below), whose sum is σ = 55373760. Its totient is φ = 55343556.

The previous prime is 55358627. The next prime is 55358687. The reversal of 55358657 is 75685355.

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 a brilliant number, because the two primes have the same length.

It is an interprime number because it is at equal distance from previous prime (55358627) and next prime (55358687).

It is a cyclic number.

It is not a de Polignac number, because 55358657 - 2¹⁰ = 55357633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55358627) 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, 1844 + ... + 10682.

It is an arithmetic number, because the mean of its divisors is an integer number (13843440).

Almost surely, 2^55358657 is an apocalyptic number.

It is an amenable number.

55358657 is a deficient number, since it is larger than the sum of its proper divisors (15103).

55358657 is an equidigital number, since it uses as much as digits as its factorization.

55358657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15102.

The product of its digits is 630000, while the sum is 44.

The square root of 55358657 is about 7440.3398443888. The cubic root of 55358657 is about 381.1200954179.

The spelling of 55358657 in words is "fifty-five million, three hundred fifty-eight thousand, six hundred fifty-seven".