155971463 has 2 divisors, whose sum is σ = 155971464. Its totient is φ = 155971462.

The previous prime is 155971423. The next prime is 155971469. The reversal of 155971463 is 364179551.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 155971463 - 2¹⁶ = 155905927 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155971463.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155971469) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77985731 + 77985732.

It is an arithmetic number, because the mean of its divisors is an integer number (77985732).

Almost surely, 2^155971463 is an apocalyptic number.

155971463 is a deficient number, since it is larger than the sum of its proper divisors (1).

155971463 is an equidigital number, since it uses as much as digits as its factorization.

155971463 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 113400, while the sum is 41.

The square root of 155971463 is about 12488.8535502663. The cubic root of 155971463 is about 538.2884342629.

The spelling of 155971463 in words is "one hundred fifty-five million, nine hundred seventy-one thousand, four hundred sixty-three".