155877413 has 2 divisors, whose sum is σ = 155877414. Its totient is φ = 155877412.

The previous prime is 155877409. The next prime is 155877431. The reversal of 155877413 is 314778551.

It is a happy number.

Together with next prime (155877431) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 113912929 + 41964484 = 10673^2 + 6478^2 .

It is an emirp because it is prime and its reverse (314778551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155877413 - 2² = 155877409 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155877433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77938706 + 77938707.

It is an arithmetic number, because the mean of its divisors is an integer number (77938707).

Almost surely, 2^155877413 is an apocalyptic number.

It is an amenable number.

155877413 is a deficient number, since it is larger than the sum of its proper divisors (1).

155877413 is an equidigital number, since it uses as much as digits as its factorization.

155877413 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 117600, while the sum is 41.

The square root of 155877413 is about 12485.0876248427. The cubic root of 155877413 is about 538.1802174446.

The spelling of 155877413 in words is "one hundred fifty-five million, eight hundred seventy-seven thousand, four hundred thirteen".