48139524 has 18 divisors (see below), whose sum is σ = 121686110. Its totient is φ = 16046496.

The previous prime is 48139517. The next prime is 48139537. The reversal of 48139524 is 42593184.

It can be written as a sum of positive squares in only one way, i.e., 36360900 + 11778624 = 6030^2 + 3432^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1337209 = 48139524 / (4 + 8 + 1 + 3 + 9 + 5 + 2 + 4).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 668569 + ... + 668640.

Almost surely, 2^48139524 is an apocalyptic number.

It is an amenable number.

48139524 is an abundant number, since it is smaller than the sum of its proper divisors (73546586).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

48139524 is a wasteful number, since it uses less digits than its factorization.

48139524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1337219 (or 1337214 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 48139524 is about 6938.2652010427. The cubic root of 48139524 is about 363.7759056195.

The spelling of 48139524 in words is "forty-eight million, one hundred thirty-nine thousand, five hundred twenty-four".