15506061 has 4 divisors (see below), whose sum is σ = 20674752. Its totient is φ = 10337372.

The previous prime is 15506053. The next prime is 15506063. The reversal of 15506061 is 16060551.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 15506061 - 2³ = 15506053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15506063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2584341 + ... + 2584346.

It is an arithmetic number, because the mean of its divisors is an integer number (5168688).

Almost surely, 2^15506061 is an apocalyptic number.

It is an amenable number.

15506061 is a deficient number, since it is larger than the sum of its proper divisors (5168691).

15506061 is an equidigital number, since it uses as much as digits as its factorization.

15506061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5168690.

The product of its (nonzero) digits is 900, while the sum is 24.

The square root of 15506061 is about 3937.7736095413. The cubic root of 15506061 is about 249.3640422695.

The spelling of 15506061 in words is "fifteen million, five hundred six thousand, sixty-one".