13561051 has 12 divisors (see below), whose sum is σ = 15853168. Its totient is φ = 11363472.

The previous prime is 13561049. The next prime is 13561081. The reversal of 13561051 is 15016531.

It is not a de Polignac number, because 13561051 - 2¹ = 13561049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13561021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15025 + ... + 15901.

Almost surely, 2^13561051 is an apocalyptic number.

13561051 is a deficient number, since it is larger than the sum of its proper divisors (2292117).

13561051 is an frugal number, since it uses more digits than its factorization.

13561051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 978 (or 931 counting only the distinct ones).

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 13561051 is about 3682.5332313504. The cubic root of 13561051 is about 238.4685529754.

Adding to 13561051 its reverse (15016531), we get a palindrome (28577582).

The spelling of 13561051 in words is "thirteen million, five hundred sixty-one thousand, fifty-one".