155909053 has 2 divisors, whose sum is σ = 155909054. Its totient is φ = 155909052.

The previous prime is 155909051. The next prime is 155909059. The reversal of 155909053 is 350909551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 118417924 + 37491129 = 10882^2 + 6123^2 .

It is a cyclic number.

It is not a de Polignac number, because 155909053 - 2¹ = 155909051 is a prime.

Together with 155909051, it forms a pair of twin primes.

It is equal to p_8757811 and since 155909053 and 8757811 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (155909051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77954526 + 77954527.

It is an arithmetic number, because the mean of its divisors is an integer number (77954527).

Almost surely, 2^155909053 is an apocalyptic number.

It is an amenable number.

155909053 is a deficient number, since it is larger than the sum of its proper divisors (1).

155909053 is an equidigital number, since it uses as much as digits as its factorization.

155909053 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30375, while the sum is 37.

The square root of 155909053 is about 12486.3546722012. The cubic root of 155909053 is about 538.2166282578.

The spelling of 155909053 in words is "one hundred fifty-five million, nine hundred nine thousand, fifty-three".