55396957 has 8 divisors (see below), whose sum is σ = 69066432. Its totient is φ = 43166400.

The previous prime is 55396927. The next prime is 55396963. The reversal of 55396957 is 75969355.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55396957 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55396957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55396927) 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, 359644 + ... + 359797.

It is an arithmetic number, because the mean of its divisors is an integer number (8633304).

Almost surely, 2^55396957 is an apocalyptic number.

It is an amenable number.

55396957 is a deficient number, since it is larger than the sum of its proper divisors (13669475).

55396957 is a wasteful number, since it uses less digits than its factorization.

55396957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719459.

The product of its digits is 1275750, while the sum is 49.

The square root of 55396957 is about 7442.9132065341. The cubic root of 55396957 is about 381.2079680618.

The spelling of 55396957 in words is "fifty-five million, three hundred ninety-six thousand, nine hundred fifty-seven".