53373857 has 4 divisors (see below), whose sum is σ = 53393220. Its totient is φ = 53354496.

The previous prime is 53373851. The next prime is 53373883. The reversal of 53373857 is 75837335.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6806881 + 46566976 = 2609^2 + 6824^2 .

It is a cyclic number.

It is not a de Polignac number, because 53373857 - 2¹² = 53369761 is a prime.

It is a super-2 number, since 2×53373857² = 5697537222112898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53373851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4688 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (13348305).

Almost surely, 2^53373857 is an apocalyptic number.

It is an amenable number.

53373857 is a deficient number, since it is larger than the sum of its proper divisors (19363).

53373857 is a wasteful number, since it uses less digits than its factorization.

53373857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19362.

The product of its digits is 264600, while the sum is 41.

The square root of 53373857 is about 7305.7413723728. The cubic root of 53373857 is about 376.5097229926.

The spelling of 53373857 in words is "fifty-three million, three hundred seventy-three thousand, eight hundred fifty-seven".