155946631 has 2 divisors, whose sum is σ = 155946632. Its totient is φ = 155946630.

The previous prime is 155946577. The next prime is 155946643. The reversal of 155946631 is 136649551.

It is a happy number.

155946631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155946631 - 2¹¹ = 155944583 is a prime.

It is a super-2 number, since 2×155946631² = 48638703440500322, which contains 22 as substring.

It is a Chen prime.

It is a pancake number, because a pancake can be divided into 155946631 parts by 17660 straight cuts.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155946671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77973315 + 77973316.

It is an arithmetic number, because the mean of its divisors is an integer number (77973316).

Almost surely, 2^155946631 is an apocalyptic number.

155946631 is a deficient number, since it is larger than the sum of its proper divisors (1).

155946631 is an equidigital number, since it uses as much as digits as its factorization.

155946631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 155946631 is about 12487.8593441790. The cubic root of 155946631 is about 538.2598660287.

The spelling of 155946631 in words is "one hundred fifty-five million, nine hundred forty-six thousand, six hundred thirty-one".