52542279 has 12 divisors (see below), whose sum is σ = 77746032. Its totient is φ = 34173600.

The previous prime is 52542263. The next prime is 52542283. The reversal of 52542279 is 97224525.

It is a happy number.

It is not a de Polignac number, because 52542279 - 2⁴ = 52542263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52542079) 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, 70827 + ... + 71564.

It is an arithmetic number, because the mean of its divisors is an integer number (6478836).

Almost surely, 2^52542279 is an apocalyptic number.

52542279 is a deficient number, since it is larger than the sum of its proper divisors (25203753).

52542279 is a wasteful number, since it uses less digits than its factorization.

52542279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142438 (or 142435 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 52542279 is about 7248.6053141277. The cubic root of 52542279 is about 374.5441073229.

The spelling of 52542279 in words is "fifty-two million, five hundred forty-two thousand, two hundred seventy-nine".