55422657 has 16 divisors (see below), whose sum is σ = 84018880. Its totient is φ = 36088416.

The previous prime is 55422649. The next prime is 55422659. The reversal of 55422657 is 75622455.

It is not a de Polignac number, because 55422657 - 2³ = 55422649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55422659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22708 + ... + 25029.

It is an arithmetic number, because the mean of its divisors is an integer number (5251180).

Almost surely, 2^55422657 is an apocalyptic number.

It is an amenable number.

55422657 is a deficient number, since it is larger than the sum of its proper divisors (28596223).

55422657 is a wasteful number, since it uses less digits than its factorization.

55422657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47789 (or 47783 counting only the distinct ones).

The product of its digits is 84000, while the sum is 36.

The square root of 55422657 is about 7444.6394808614. The cubic root of 55422657 is about 381.2669095071.

The spelling of 55422657 in words is "fifty-five million, four hundred twenty-two thousand, six hundred fifty-seven".