155254251 has 8 divisors (see below), whose sum is σ = 219182544. Its totient is φ = 97414400.

The previous prime is 155254247. The next prime is 155254261. The reversal of 155254251 is 152452551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 155254251 - 2² = 155254247 is a prime.

It is not an unprimeable number, because it can be changed into a prime (155254201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1522050 + ... + 1522151.

It is an arithmetic number, because the mean of its divisors is an integer number (27397818).

Almost surely, 2^155254251 is an apocalyptic number.

155254251 is a deficient number, since it is larger than the sum of its proper divisors (63928293).

155254251 is a wasteful number, since it uses less digits than its factorization.

155254251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3044221.

The product of its digits is 10000, while the sum is 30.

The square root of 155254251 is about 12460.1063799632. The cubic root of 155254251 is about 537.4620860944.

The spelling of 155254251 in words is "one hundred fifty-five million, two hundred fifty-four thousand, two hundred fifty-one".