52466139 has 12 divisors (see below), whose sum is σ = 82674072. Its totient is φ = 31797600.

The previous prime is 52466137. The next prime is 52466143. The reversal of 52466139 is 93166425.

It is a happy number.

It is not a de Polignac number, because 52466139 - 2¹ = 52466137 is a prime.

It is not an unprimeable number, because it can be changed into a prime (52466137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 264882 + ... + 265079.

It is an arithmetic number, because the mean of its divisors is an integer number (6889506).

Almost surely, 2^52466139 is an apocalyptic number.

52466139 is a deficient number, since it is larger than the sum of its proper divisors (30207933).

52466139 is a wasteful number, since it uses less digits than its factorization.

52466139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529978 (or 529975 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 52466139 is about 7243.3513652176. The cubic root of 52466139 is about 374.3631002356.

The spelling of 52466139 in words is "fifty-two million, four hundred sixty-six thousand, one hundred thirty-nine".