151005561 has 16 divisors (see below), whose sum is σ = 233877888. Its totient is φ = 84873600.

The previous prime is 151005553. The next prime is 151005563. The reversal of 151005561 is 165500151.

It is not a de Polignac number, because 151005561 - 2³ = 151005553 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (151005563) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57660 + ... + 60221.

It is an arithmetic number, because the mean of its divisors is an integer number (14617368).

Almost surely, 2^151005561 is an apocalyptic number.

It is an amenable number.

151005561 is a deficient number, since it is larger than the sum of its proper divisors (82872327).

151005561 is a wasteful number, since it uses less digits than its factorization.

151005561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117952.

The product of its (nonzero) digits is 750, while the sum is 24.

The square root of 151005561 is about 12288.4319992422. The cubic root of 151005561 is about 532.5139391092.

The spelling of 151005561 in words is "one hundred fifty-one million, five thousand, five hundred sixty-one".