151224561 has 12 divisors (see below), whose sum is σ = 221696592. Its totient is φ = 99311256.

The previous prime is 151224509. The next prime is 151224583. The reversal of 151224561 is 165422151.

It is not a de Polignac number, because 151224561 - 2⁷ = 151224433 is a prime.

It is not an unprimeable number, because it can be changed into a prime (151224461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 124791 + ... + 125996.

It is an arithmetic number, because the mean of its divisors is an integer number (18474716).

Almost surely, 2^151224561 is an apocalyptic number.

It is an amenable number.

151224561 is a deficient number, since it is larger than the sum of its proper divisors (70472031).

151224561 is a wasteful number, since it uses less digits than its factorization.

151224561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250860 (or 250857 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 151224561 is about 12297.3395903342. The cubic root of 151224561 is about 532.7712457935.

It can be divided in two parts, 15122 and 4561, that added together give a 9-th power (19683 = 3⁹).

The spelling of 151224561 in words is "one hundred fifty-one million, two hundred twenty-four thousand, five hundred sixty-one".