155365051 has 2 divisors, whose sum is σ = 155365052. Its totient is φ = 155365050.

The previous prime is 155365043. The next prime is 155365061. The reversal of 155365051 is 150563551.

It is a weak prime.

It is an emirp because it is prime and its reverse (150563551) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 155365051 - 2³ = 155365043 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (155365061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77682525 + 77682526.

It is an arithmetic number, because the mean of its divisors is an integer number (77682526).

Almost surely, 2^155365051 is an apocalyptic number.

155365051 is a deficient number, since it is larger than the sum of its proper divisors (1).

155365051 is an equidigital number, since it uses as much as digits as its factorization.

155365051 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11250, while the sum is 31.

The square root of 155365051 is about 12464.5517769393. The cubic root of 155365051 is about 537.5899121987.

The spelling of 155365051 in words is "one hundred fifty-five million, three hundred sixty-five thousand, fifty-one".