155211455 has 16 divisors (see below), whose sum is σ = 213312000. Its totient is φ = 106205472.

The previous prime is 155211449. The next prime is 155211457. The reversal of 155211455 is 554112551.

155211455 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 155211455 - 2⁴ = 155211439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155211457) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13022 + ... + 21908.

It is an arithmetic number, because the mean of its divisors is an integer number (13332000).

Almost surely, 2^155211455 is an apocalyptic number.

155211455 is a deficient number, since it is larger than the sum of its proper divisors (58100545).

155211455 is an equidigital number, since it uses as much as digits as its factorization.

155211455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9398.

The product of its digits is 5000, while the sum is 29.

The square root of 155211455 is about 12458.3889407901. The cubic root of 155211455 is about 537.4126975569.

The spelling of 155211455 in words is "one hundred fifty-five million, two hundred eleven thousand, four hundred fifty-five".