113551637 has 2 divisors, whose sum is σ = 113551638. Its totient is φ = 113551636.

The previous prime is 113551609. The next prime is 113551639. The reversal of 113551637 is 736155311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102535876 + 11015761 = 10126^2 + 3319^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113551637 is a prime.

Together with 113551639, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113551639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56775818 + 56775819.

It is an arithmetic number, because the mean of its divisors is an integer number (56775819).

Almost surely, 2^113551637 is an apocalyptic number.

It is an amenable number.

113551637 is a deficient number, since it is larger than the sum of its proper divisors (1).

113551637 is an equidigital number, since it uses as much as digits as its factorization.

113551637 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9450, while the sum is 32.

The square root of 113551637 is about 10656.0610452456. The cubic root of 113551637 is about 484.2442432875.

The spelling of 113551637 in words is "one hundred thirteen million, five hundred fifty-one thousand, six hundred thirty-seven".