53357649 has 4 divisors (see below), whose sum is σ = 71143536. Its totient is φ = 35571764.

The previous prime is 53357639. The next prime is 53357657. The reversal of 53357649 is 94675335.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 53357649 - 2⁵ = 53357617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 53357649.

It is not an unprimeable number, because it can be changed into a prime (53357639) 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, 8892939 + ... + 8892944.

It is an arithmetic number, because the mean of its divisors is an integer number (17785884).

Almost surely, 2^53357649 is an apocalyptic number.

It is an amenable number.

53357649 is a deficient number, since it is larger than the sum of its proper divisors (17785887).

53357649 is a wasteful number, since it uses less digits than its factorization.

53357649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17785886.

The product of its digits is 340200, while the sum is 42.

The square root of 53357649 is about 7304.6320235861. The cubic root of 53357649 is about 376.4716076570.

The spelling of 53357649 in words is "fifty-three million, three hundred fifty-seven thousand, six hundred forty-nine".