53561157 has 8 divisors (see below), whose sum is σ = 76908384. Its totient is φ = 32960688.

The previous prime is 53561143. The next prime is 53561159. The reversal of 53561157 is 75116535.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 53561157 - 2⁷ = 53561029 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53561159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686643 + ... + 686720.

It is an arithmetic number, because the mean of its divisors is an integer number (9613548).

Almost surely, 2^53561157 is an apocalyptic number.

It is an amenable number.

53561157 is a deficient number, since it is larger than the sum of its proper divisors (23347227).

53561157 is a wasteful number, since it uses less digits than its factorization.

53561157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1373379.

The product of its digits is 15750, while the sum is 33.

The square root of 53561157 is about 7318.5488315649. The cubic root of 53561157 is about 376.9496258801.

The spelling of 53561157 in words is "fifty-three million, five hundred sixty-one thousand, one hundred fifty-seven".