53455657 has 4 divisors (see below), whose sum is σ = 55779840. Its totient is φ = 51131476.

The previous prime is 53455651. The next prime is 53455663. The reversal of 53455657 is 75655435.

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 an interprime number because it is at equal distance from previous prime (53455651) and next prime (53455663).

It is a cyclic number.

It is not a de Polignac number, because 53455657 - 2⁷ = 53455529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53455651) 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, 1162057 + ... + 1162102.

It is an arithmetic number, because the mean of its divisors is an integer number (13944960).

Almost surely, 2^53455657 is an apocalyptic number.

It is an amenable number.

53455657 is a deficient number, since it is larger than the sum of its proper divisors (2324183).

53455657 is a wasteful number, since it uses less digits than its factorization.

53455657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2324182.

The product of its digits is 315000, while the sum is 40.

The square root of 53455657 is about 7311.3375657263. The cubic root of 53455657 is about 376.7019692637.

The spelling of 53455657 in words is "fifty-three million, four hundred fifty-five thousand, six hundred fifty-seven".