151561863 has 12 divisors (see below), whose sum is σ = 219740040. Its totient is φ = 100664016.

The previous prime is 151561843. The next prime is 151561877. The reversal of 151561863 is 368165151.

151561863 is a `hidden beast` number, since 1 + 515 + 61 + 86 + 3 = 666.

It is not a de Polignac number, because 151561863 - 2⁵ = 151561831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (151561843) 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 11 ways as a sum of consecutive naturals, for example, 28881 + ... + 33722.

It is an arithmetic number, because the mean of its divisors is an integer number (18311670).

Almost surely, 2^151561863 is an apocalyptic number.

151561863 is a deficient number, since it is larger than the sum of its proper divisors (68178177).

151561863 is a wasteful number, since it uses less digits than its factorization.

151561863 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62878 (or 62875 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 151561863 is about 12311.0463811977. The cubic root of 151561863 is about 533.1670619275.

The spelling of 151561863 in words is "one hundred fifty-one million, five hundred sixty-one thousand, eight hundred sixty-three".