55397136 has 40 divisors (see below), whose sum is σ = 144040384. Its totient is φ = 18345600.

The previous prime is 55397131. The next prime is 55397189. The reversal of 55397136 is 63179355.

It is a junction number, because it is equal to n+sod(n) for n = 55397094 and 55397103.

It is not an unprimeable number, because it can be changed into a prime (55397131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3861 + ... + 11211.

Almost surely, 2^55397136 is an apocalyptic number.

It is an amenable number.

55397136 is an abundant number, since it is smaller than the sum of its proper divisors (88643248).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55397136 is a wasteful number, since it uses less digits than its factorization.

55397136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7519 (or 7513 counting only the distinct ones).

The product of its digits is 85050, while the sum is 39.

The square root of 55397136 is about 7442.9252313858. The cubic root of 55397136 is about 381.2083786508.

The spelling of 55397136 in words is "fifty-five million, three hundred ninety-seven thousand, one hundred thirty-six".