52974138 has 16 divisors (see below), whose sum is σ = 121083840. Its totient is φ = 15135456.

The previous prime is 52974127. The next prime is 52974139. The reversal of 52974138 is 83147925.

It is a junction number, because it is equal to n+sod(n) for n = 52974096 and 52974105.

It is not an unprimeable number, because it can be changed into a prime (52974139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 630603 + ... + 630686.

It is an arithmetic number, because the mean of its divisors is an integer number (7567740).

Almost surely, 2^52974138 is an apocalyptic number.

52974138 is an abundant number, since it is smaller than the sum of its proper divisors (68109702).

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

52974138 is a wasteful number, since it uses less digits than its factorization.

52974138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261301.

The product of its digits is 60480, while the sum is 39.

The square root of 52974138 is about 7278.3334630944. Note that the first 3 decimals coincide. The cubic root of 52974138 is about 375.5674679583.

The spelling of 52974138 in words is "fifty-two million, nine hundred seventy-four thousand, one hundred thirty-eight".