53571402 has 32 divisors (see below), whose sum is σ = 119972160. Its totient is φ = 17718480.

The previous prime is 53571389. The next prime is 53571407. The reversal of 53571402 is 20417535.

It is a happy number.

53571402 is a `hidden beast` number, since 53 + 571 + 40 + 2 = 666.

It is a super-2 number, since 2×53571402² = 5739790224491208, which contains 22 as substring.

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

It is not an unprimeable number, because it can be changed into a prime (53571407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3288 + ... + 10860.

It is an arithmetic number, because the mean of its divisors is an integer number (3749130).

Almost surely, 2^53571402 is an apocalyptic number.

53571402 is an abundant number, since it is smaller than the sum of its proper divisors (66400758).

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

53571402 is a wasteful number, since it uses less digits than its factorization.

53571402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7715 (or 7709 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 53571402 is about 7319.2487319396. The cubic root of 53571402 is about 376.9736582382.

Adding to 53571402 its reverse (20417535), we get a palindrome (73988937).

The spelling of 53571402 in words is "fifty-three million, five hundred seventy-one thousand, four hundred two".