155352251 has 8 divisors (see below), whose sum is σ = 158941440. Its totient is φ = 151795048.

The previous prime is 155352209. The next prime is 155352257. The reversal of 155352251 is 152253551.

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 155352251 - 2⁶ = 155352187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155352257) 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, 1970 + ... + 17736.

It is an arithmetic number, because the mean of its divisors is an integer number (19867680).

Almost surely, 2^155352251 is an apocalyptic number.

155352251 is a deficient number, since it is larger than the sum of its proper divisors (3589189).

155352251 is a wasteful number, since it uses less digits than its factorization.

155352251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15993.

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

The square root of 155352251 is about 12464.0383102749. The cubic root of 155352251 is about 537.5751483896.

The spelling of 155352251 in words is "one hundred fifty-five million, three hundred fifty-two thousand, two hundred fifty-one".