80139526 has 16 divisors (see below), whose sum is σ = 124305408. Its totient is φ = 38709000.

The previous prime is 80139517. The next prime is 80139529. The reversal of 80139526 is 62593108.

It is a junction number, because it is equal to n+sod(n) for n = 80139491 and 80139500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80139529) 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, 69051 + ... + 70201.

It is an arithmetic number, because the mean of its divisors is an integer number (7769088).

Almost surely, 2^80139526 is an apocalyptic number.

80139526 is a deficient number, since it is larger than the sum of its proper divisors (44165882).

80139526 is a wasteful number, since it uses less digits than its factorization.

80139526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 80139526 is about 8952.0682526442. The cubic root of 80139526 is about 431.1372922294.

The spelling of 80139526 in words is "eighty million, one hundred thirty-nine thousand, five hundred twenty-six".