55139010 has 16 divisors (see below), whose sum is σ = 132333696. Its totient is φ = 14703728.

The previous prime is 55139003. The next prime is 55139011. The reversal of 55139010 is 1093155.

It is not an unprimeable number, because it can be changed into a prime (55139011) 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, 918954 + ... + 919013.

It is an arithmetic number, because the mean of its divisors is an integer number (8270856).

Almost surely, 2^55139010 is an apocalyptic number.

55139010 is an abundant number, since it is smaller than the sum of its proper divisors (77194686).

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

55139010 is a wasteful number, since it uses less digits than its factorization.

55139010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1837977.

The product of its (nonzero) digits is 675, while the sum is 24.

The square root of 55139010 is about 7425.5646249965. The cubic root of 55139010 is about 380.6153695111.

The spelling of 55139010 in words is "fifty-five million, one hundred thirty-nine thousand, ten".