157446631 has 2 divisors, whose sum is σ = 157446632. Its totient is φ = 157446630.

The previous prime is 157446593. The next prime is 157446647. The reversal of 157446631 is 136644751.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-157446631 is a prime.

It is a super-2 number, since 2×157446631² = 49578883226500322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157446671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78723315 + 78723316.

It is an arithmetic number, because the mean of its divisors is an integer number (78723316).

Almost surely, 2^157446631 is an apocalyptic number.

157446631 is a deficient number, since it is larger than the sum of its proper divisors (1).

157446631 is an equidigital number, since it uses as much as digits as its factorization.

157446631 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 60480, while the sum is 37.

The square root of 157446631 is about 12547.7739460033. The cubic root of 157446631 is about 539.9801444460.

It can be divided in two parts, 1574 and 46631, that added together give a triangular number (48205 = T₃₁₀).

The spelling of 157446631 in words is "one hundred fifty-seven million, four hundred forty-six thousand, six hundred thirty-one".