53561137 has 4 divisors (see below), whose sum is σ = 61212736. Its totient is φ = 45909540.

The previous prime is 53561119. The next prime is 53561143. The reversal of 53561137 is 73116535.

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 53561137 - 2¹¹ = 53559089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 53561099 and 53561108.

It is not an unprimeable number, because it can be changed into a prime (53561177) 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, 3825789 + ... + 3825802.

It is an arithmetic number, because the mean of its divisors is an integer number (15303184).

Almost surely, 2^53561137 is an apocalyptic number.

It is an amenable number.

53561137 is a deficient number, since it is larger than the sum of its proper divisors (7651599).

53561137 is an equidigital number, since it uses as much as digits as its factorization.

53561137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7651598.

The product of its digits is 9450, while the sum is 31.

The square root of 53561137 is about 7318.5474651737. The cubic root of 53561137 is about 376.9495789619.

The spelling of 53561137 in words is "fifty-three million, five hundred sixty-one thousand, one hundred thirty-seven".