13651057 has 8 divisors (see below), whose sum is σ = 15920000. Its totient is φ = 11700612.

The previous prime is 13651031. The next prime is 13651109. The reversal of 13651057 is 75015631.

It is not a de Polignac number, because 13651057 - 2⁷ = 13650929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13601057) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19557 + ... + 20242.

It is an arithmetic number, because the mean of its divisors is an integer number (1990000).

Almost surely, 2^13651057 is an apocalyptic number.

It is an amenable number.

13651057 is a deficient number, since it is larger than the sum of its proper divisors (2268943).

13651057 is an frugal number, since it uses more digits than its factorization.

13651057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39820 (or 39806 counting only the distinct ones).

The product of its (nonzero) digits is 3150, while the sum is 28.

The square root of 13651057 is about 3694.7336845840. The cubic root of 13651057 is about 238.9949696367.

Adding to 13651057 its reverse (75015631), we get a palindrome (88666688).

The spelling of 13651057 in words is "thirteen million, six hundred fifty-one thousand, fifty-seven".