52645402 has 8 divisors (see below), whose sum is σ = 79017876. Its totient is φ = 26306112.

The previous prime is 52645399. The next prime is 52645403. The reversal of 52645402 is 20454625.

It can be written as a sum of positive squares in 2 ways, for example, as 52113961 + 531441 = 7219^2 + 729^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (52645403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3853 + ... + 10960.

Almost surely, 2^52645402 is an apocalyptic number.

52645402 is a deficient number, since it is larger than the sum of its proper divisors (26372474).

52645402 is a wasteful number, since it uses less digits than its factorization.

52645402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16592.

The product of its (nonzero) digits is 9600, while the sum is 28.

The square root of 52645402 is about 7255.7151267122. The cubic root of 52645402 is about 374.7889823167.

The spelling of 52645402 in words is "fifty-two million, six hundred forty-five thousand, four hundred two".