151115251 has 4 divisors (see below), whose sum is σ = 172703152. Its totient is φ = 129527352.

The previous prime is 151115249. The next prime is 151115257. The reversal of 151115251 is 152511151.

151115251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 151115251 - 2¹ = 151115249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151115257) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10793940 + ... + 10793953.

It is an arithmetic number, because the mean of its divisors is an integer number (43175788).

Almost surely, 2^151115251 is an apocalyptic number.

151115251 is a deficient number, since it is larger than the sum of its proper divisors (21587901).

151115251 is an equidigital number, since it uses as much as digits as its factorization.

151115251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21587900.

The product of its digits is 250, while the sum is 22.

The square root of 151115251 is about 12292.8943296524. The cubic root of 151115251 is about 532.6428467600.

The spelling of 151115251 in words is "one hundred fifty-one million, one hundred fifteen thousand, two hundred fifty-one".