151393506 has 48 divisors (see below), whose sum is σ = 335262144. Its totient is φ = 45540000.

The previous prime is 151393481. The next prime is 151393537. The reversal of 151393506 is 605393151.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108936 + ... + 110316.

It is an arithmetic number, because the mean of its divisors is an integer number (6984628).

Almost surely, 2^151393506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 151393506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (167631072).

151393506 is an abundant number, since it is smaller than the sum of its proper divisors (183868638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

151393506 is a wasteful number, since it uses less digits than its factorization.

151393506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1559 (or 1548 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 33.

The square root of 151393506 is about 12304.2068415644. The cubic root of 151393506 is about 532.9695723519.

The spelling of 151393506 in words is "one hundred fifty-one million, three hundred ninety-three thousand, five hundred six".