155269553 has 2 divisors, whose sum is σ = 155269554. Its totient is φ = 155269552.

The previous prime is 155269547. The next prime is 155269627. The reversal of 155269553 is 355962551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 132066064 + 23203489 = 11492^2 + 4817^2 .

It is a cyclic number.

It is not a de Polignac number, because 155269553 - 2⁴ = 155269537 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155269553.

It is not a weakly prime, because it can be changed into another prime (155269253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77634776 + 77634777.

It is an arithmetic number, because the mean of its divisors is an integer number (77634777).

Almost surely, 2^155269553 is an apocalyptic number.

It is an amenable number.

155269553 is a deficient number, since it is larger than the sum of its proper divisors (1).

155269553 is an equidigital number, since it uses as much as digits as its factorization.

155269553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 202500, while the sum is 41.

The square root of 155269553 is about 12460.7204045352. The cubic root of 155269553 is about 537.4797430981.

The spelling of 155269553 in words is "one hundred fifty-five million, two hundred sixty-nine thousand, five hundred fifty-three".