15220061 has 16 divisors (see below), whose sum is σ = 16343040. Its totient is φ = 14152320.

The previous prime is 15220031. The next prime is 15220067. The reversal of 15220061 is 16002251.

It is a cyclic number.

It is not a de Polignac number, because 15220061 - 2¹⁰ = 15219037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15220067) 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, 119780 + ... + 119906.

It is an arithmetic number, because the mean of its divisors is an integer number (1021440).

Almost surely, 2^15220061 is an apocalyptic number.

It is an amenable number.

15220061 is a deficient number, since it is larger than the sum of its proper divisors (1122979).

15220061 is a wasteful number, since it uses less digits than its factorization.

15220061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 284.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 15220061 is about 3901.2896585616. The cubic root of 15220061 is about 247.8213952065.

The spelling of 15220061 in words is "fifteen million, two hundred twenty thousand, sixty-one".