53402697 has 12 divisors (see below), whose sum is σ = 77846340. Its totient is φ = 35274528.

The previous prime is 53402693. The next prime is 53402731. The reversal of 53402697 is 79620435.

It can be written as a sum of positive squares in 2 ways, for example, as 20466576 + 32936121 = 4524^2 + 5739^2 .

It is not a de Polignac number, because 53402697 - 2² = 53402693 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (53402693) 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, 26238 + ... + 28199.

It is an arithmetic number, because the mean of its divisors is an integer number (6487195).

Almost surely, 2^53402697 is an apocalyptic number.

It is an amenable number.

53402697 is a deficient number, since it is larger than the sum of its proper divisors (24443643).

53402697 is a wasteful number, since it uses less digits than its factorization.

53402697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54552 (or 54549 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The square root of 53402697 is about 7307.7148959165. The cubic root of 53402697 is about 376.5775251329.

The spelling of 53402697 in words is "fifty-three million, four hundred two thousand, six hundred ninety-seven".