156154987 has 2 divisors, whose sum is σ = 156154988. Its totient is φ = 156154986.

The previous prime is 156154961. The next prime is 156154997. The reversal of 156154987 is 789451651.

It is a strong prime.

It is an emirp because it is prime and its reverse (789451651) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-156154987 is a prime.

It is not a weakly prime, because it can be changed into another prime (156154927) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78077493 + 78077494.

It is an arithmetic number, because the mean of its divisors is an integer number (78077494).

Almost surely, 2^156154987 is an apocalyptic number.

156154987 is a deficient number, since it is larger than the sum of its proper divisors (1).

156154987 is an equidigital number, since it uses as much as digits as its factorization.

156154987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 302400, while the sum is 46.

The square root of 156154987 is about 12496.1989020662. The cubic root of 156154987 is about 538.4994774100.

It can be divided in two parts, 15615 and 4987, that added together give a palindrome (20602).

The spelling of 156154987 in words is "one hundred fifty-six million, one hundred fifty-four thousand, nine hundred eighty-seven".