53491365 has 24 divisors (see below), whose sum is σ = 97599840. Its totient is φ = 27026784.

The previous prime is 53491357. The next prime is 53491391. The reversal of 53491365 is 56319435.

53491365 is a `hidden beast` number, since 534 + 91 + 36 + 5 = 666.

It is not a de Polignac number, because 53491365 - 2³ = 53491357 is a prime.

It is a super-2 number, since 2×53491365² = 5722652259126450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30427 + ... + 32136.

It is an arithmetic number, because the mean of its divisors is an integer number (4066660).

Almost surely, 2^53491365 is an apocalyptic number.

It is an amenable number.

53491365 is a deficient number, since it is larger than the sum of its proper divisors (44108475).

53491365 is a wasteful number, since it uses less digits than its factorization.

53491365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62593 (or 62590 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 53491365 is about 7313.7791188961. The cubic root of 53491365 is about 376.7858286758.

The spelling of 53491365 in words is "fifty-three million, four hundred ninety-one thousand, three hundred sixty-five".