155054513 has 2 divisors, whose sum is σ = 155054514. Its totient is φ = 155054512.

The previous prime is 155054509. The next prime is 155054519. The reversal of 155054513 is 315450551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155052304 + 2209 = 12452^2 + 47^2 .

It is a cyclic number.

It is not a de Polignac number, because 155054513 - 2² = 155054509 is a prime.

It is not a weakly prime, because it can be changed into another prime (155054519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77527256 + 77527257.

It is an arithmetic number, because the mean of its divisors is an integer number (77527257).

Almost surely, 2^155054513 is an apocalyptic number.

It is an amenable number.

155054513 is a deficient number, since it is larger than the sum of its proper divisors (1).

155054513 is an equidigital number, since it uses as much as digits as its factorization.

155054513 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7500, while the sum is 29.

The square root of 155054513 is about 12452.0887002944. The cubic root of 155054513 is about 537.2315015938.

The spelling of 155054513 in words is "one hundred fifty-five million, fifty-four thousand, five hundred thirteen".