52139091 has 16 divisors (see below), whose sum is σ = 74232576. Its totient is φ = 32473056.

The previous prime is 52139089. The next prime is 52139093. The reversal of 52139091 is 19093125.

52139091 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (52139089) and next prime (52139093).

It is not a de Polignac number, because 52139091 - 2¹ = 52139089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52139093) 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 in 15 ways as a sum of consecutive naturals, for example, 5820 + ... + 11753.

It is an arithmetic number, because the mean of its divisors is an integer number (4639536).

Almost surely, 2^52139091 is an apocalyptic number.

52139091 is a deficient number, since it is larger than the sum of its proper divisors (22093485).

52139091 is a wasteful number, since it uses less digits than its factorization.

52139091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17642.

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 52139091 is about 7220.7403360043. The cubic root of 52139091 is about 373.5836134441.

The spelling of 52139091 in words is "fifty-two million, one hundred thirty-nine thousand, ninety-one".