139065051 has 4 divisors (see below), whose sum is σ = 185420072. Its totient is φ = 92710032.

The previous prime is 139065041. The next prime is 139065067. The reversal of 139065051 is 150560931.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 139065051 - 2⁶ = 139064987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139065041) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23177506 + ... + 23177511.

It is an arithmetic number, because the mean of its divisors is an integer number (46355018).

Almost surely, 2^139065051 is an apocalyptic number.

139065051 is a deficient number, since it is larger than the sum of its proper divisors (46355021).

139065051 is an equidigital number, since it uses as much as digits as its factorization.

139065051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46355020.

The product of its (nonzero) digits is 4050, while the sum is 30.

The square root of 139065051 is about 11792.5845767584. The cubic root of 139065051 is about 518.0909424761.

The spelling of 139065051 in words is "one hundred thirty-nine million, sixty-five thousand, fifty-one".