55081929 has 24 divisors (see below), whose sum is σ = 85749888. Its totient is φ = 31358880.

The previous prime is 55081927. The next prime is 55081967. The reversal of 55081929 is 92918055.

It is not a de Polignac number, because 55081929 - 2¹ = 55081927 is a prime.

It is a super-2 number, since 2×55081929² = 6068037804722082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55081927) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53439 + ... + 54459.

It is an arithmetic number, because the mean of its divisors is an integer number (3572912).

Almost surely, 2^55081929 is an apocalyptic number.

It is an amenable number.

55081929 is a deficient number, since it is larger than the sum of its proper divisors (30667959).

55081929 is a wasteful number, since it uses less digits than its factorization.

55081929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405 (or 1398 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 39.

The square root of 55081929 is about 7421.7200836464. The cubic root of 55081929 is about 380.4839839623.

The spelling of 55081929 in words is "fifty-five million, eighty-one thousand, nine hundred twenty-nine".