55196731 has 2 divisors, whose sum is σ = 55196732. Its totient is φ = 55196730.

The previous prime is 55196723. The next prime is 55196741. The reversal of 55196731 is 13769155.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 55196731 - 2³ = 55196723 is a prime.

It is a super-2 number, since 2×55196731² = 6093358226172722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (55196741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27598365 + 27598366.

It is an arithmetic number, because the mean of its divisors is an integer number (27598366).

Almost surely, 2^55196731 is an apocalyptic number.

55196731 is a deficient number, since it is larger than the sum of its proper divisors (1).

55196731 is an equidigital number, since it uses as much as digits as its factorization.

55196731 is an evil number, because the sum of its binary digits is even.

The product of its digits is 28350, while the sum is 37.

The square root of 55196731 is about 7429.4502488408. The cubic root of 55196731 is about 380.7481359989.

The spelling of 55196731 in words is "fifty-five million, one hundred ninety-six thousand, seven hundred thirty-one".