52545402 has 192 divisors, whose sum is σ = 156791040. Its totient is φ = 12690432.

The previous prime is 52545397. The next prime is 52545421. The reversal of 52545402 is 20454525.

52545402 is a `hidden beast` number, since 5 + 254 + 5 + 402 = 666.

It is a super-2 number, since 2×52545402² = 5522038542683208, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1420128 + ... + 1420164.

It is an arithmetic number, because the mean of its divisors is an integer number (816620).

Almost surely, 2^52545402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52545402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78395520).

52545402 is an abundant number, since it is smaller than the sum of its proper divisors (104245638).

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

52545402 is a wasteful number, since it uses less digits than its factorization.

52545402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 79 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 52545402 is about 7248.8207316777. The cubic root of 52545402 is about 374.5515278745.

Adding to 52545402 its reverse (20454525), we get a palindrome (72999927).

The spelling of 52545402 in words is "fifty-two million, five hundred forty-five thousand, four hundred two".