151651251 has 16 divisors (see below), whose sum is σ = 230149920. Its totient is φ = 98634240.

The previous prime is 151651249. The next prime is 151651273. The reversal of 151651251 is 152156151.

151651251 is a `hidden beast` number, since 1 + 5 + 1 + 651 + 2 + 5 + 1 = 666.

It is not a de Polignac number, because 151651251 - 2¹ = 151651249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (151651211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67390 + ... + 69603.

It is an arithmetic number, because the mean of its divisors is an integer number (14384370).

Almost surely, 2^151651251 is an apocalyptic number.

151651251 is a deficient number, since it is larger than the sum of its proper divisors (78498669).

151651251 is a wasteful number, since it uses less digits than its factorization.

151651251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 137043 (or 137037 counting only the distinct ones).

The product of its digits is 1500, while the sum is 27.

The square root of 151651251 is about 12314.6762442218. The cubic root of 151651251 is about 533.2718582355.

The spelling of 151651251 in words is "one hundred fifty-one million, six hundred fifty-one thousand, two hundred fifty-one".