139220527 has 2 divisors, whose sum is σ = 139220528. Its totient is φ = 139220526.

The previous prime is 139220519. The next prime is 139220567. The reversal of 139220527 is 725022931.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 139220527 - 2³ = 139220519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (139220567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69610263 + 69610264.

It is an arithmetic number, because the mean of its divisors is an integer number (69610264).

Almost surely, 2^139220527 is an apocalyptic number.

139220527 is a deficient number, since it is larger than the sum of its proper divisors (1).

139220527 is an equidigital number, since it uses as much as digits as its factorization.

139220527 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 139220527 is about 11799.1748440304. The cubic root of 139220527 is about 518.2839473722.

The spelling of 139220527 in words is "one hundred thirty-nine million, two hundred twenty thousand, five hundred twenty-seven".