151121565 has 64 divisors (see below), whose sum is σ = 314265600. Its totient is φ = 67459392.

The previous prime is 151121539. The next prime is 151121587. The reversal of 151121565 is 565121151.

151121565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 151121565 - 2⁵ = 151121533 is a prime.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 38776 + ... + 42494.

It is an arithmetic number, because the mean of its divisors is an integer number (4910400).

Almost surely, 2^151121565 is an apocalyptic number.

151121565 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

151121565 is an abundant number, since it is smaller than the sum of its proper divisors (163144035).

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

151121565 is a wasteful number, since it uses less digits than its factorization.

151121565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3783 (or 3777 counting only the distinct ones).

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

The square root of 151121565 is about 12293.1511419977. The cubic root of 151121565 is about 532.6502650717.

The spelling of 151121565 in words is "one hundred fifty-one million, one hundred twenty-one thousand, five hundred sixty-five".