52640474 has 16 divisors (see below), whose sum is σ = 81806760. Its totient is φ = 25386240.

The previous prime is 52640461. The next prime is 52640477. The reversal of 52640474 is 47404625.

It can be written as a sum of positive squares in 4 ways, for example, as 32775625 + 19864849 = 5725^2 + 4457^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 52640474.

It is not an unprimeable number, because it can be changed into a prime (52640477) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3692 + ... + 10904.

Almost surely, 2^52640474 is an apocalyptic number.

52640474 is a deficient number, since it is larger than the sum of its proper divisors (29166286).

52640474 is a wasteful number, since it uses less digits than its factorization.

52640474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7345.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 52640474 is about 7255.3755243957. The cubic root of 52640474 is about 374.7772876092. Note that the first 3 decimals are identical.

The spelling of 52640474 in words is "fifty-two million, six hundred forty thousand, four hundred seventy-four".