55139164 has 12 divisors (see below), whose sum is σ = 96579000. Its totient is φ = 27545168.

The previous prime is 55139087. The next prime is 55139221. The reversal of 55139164 is 46193155.

It is a super-3 number, since 3×55139164³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 439 + ... + 10510.

It is an arithmetic number, because the mean of its divisors is an integer number (8048250).

Almost surely, 2^55139164 is an apocalyptic number.

It is an amenable number.

55139164 is a deficient number, since it is larger than the sum of its proper divisors (41439836).

55139164 is a wasteful number, since it uses less digits than its factorization.

55139164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12212 (or 12210 counting only the distinct ones).

The product of its digits is 16200, while the sum is 34.

The square root of 55139164 is about 7425.5749945711. The cubic root of 55139164 is about 380.6157238561.

The spelling of 55139164 in words is "fifty-five million, one hundred thirty-nine thousand, one hundred sixty-four".