151321563 has 6 divisors (see below), whose sum is σ = 218575604. Its totient is φ = 100881036.

The previous prime is 151321561. The next prime is 151321579. The reversal of 151321563 is 365123151.

It is not a de Polignac number, because 151321563 - 2¹ = 151321561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (151321561) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8406745 + ... + 8406762.

Almost surely, 2^151321563 is an apocalyptic number.

151321563 is a deficient number, since it is larger than the sum of its proper divisors (67254041).

151321563 is a wasteful number, since it uses less digits than its factorization.

151321563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16813513 (or 16813510 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 151321563 is about 12301.2829818682. The cubic root of 151321563 is about 532.8851356495.

The spelling of 151321563 in words is "one hundred fifty-one million, three hundred twenty-one thousand, five hundred sixty-three".