151251251 has 4 divisors (see below), whose sum is σ = 151900632. Its totient is φ = 150601872.

The previous prime is 151251239. The next prime is 151251257. The reversal of 151251251 is 152152151.

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 151251251 - 2⁶ = 151251187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151251257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 324341 + ... + 324806.

It is an arithmetic number, because the mean of its divisors is an integer number (37975158).

Almost surely, 2^151251251 is an apocalyptic number.

151251251 is a deficient number, since it is larger than the sum of its proper divisors (649381).

151251251 is an equidigital number, since it uses as much as digits as its factorization.

151251251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649380.

The product of its digits is 500, while the sum is 23.

The square root of 151251251 is about 12298.4247365262. The cubic root of 151251251 is about 532.8025873251.

The spelling of 151251251 in words is "one hundred fifty-one million, two hundred fifty-one thousand, two hundred fifty-one".