52052040 has 48 divisors (see below), whose sum is σ = 169170300. Its totient is φ = 13880448.

The previous prime is 52052029. The next prime is 52052041. The reversal of 52052040 is 4025025.

It can be written as a sum of positive squares in 2 ways, for example, as 48525156 + 3526884 = 6966^2 + 1878^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (52052041) 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, 71935 + ... + 72654.

Almost surely, 2^52052040 is an apocalyptic number.

It is an amenable number.

52052040 is an abundant number, since it is smaller than the sum of its proper divisors (117118260).

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

52052040 is a wasteful number, since it uses less digits than its factorization.

52052040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 144606 (or 144599 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 52052040 is about 7214.7099733808. The cubic root of 52052040 is about 373.3755869126.

Adding to 52052040 its reverse (4025025), we get a palindrome (56077065).

The spelling of 52052040 in words is "fifty-two million, fifty-two thousand, forty", and thus it is an eban number.