15701601 has 4 divisors (see below), whose sum is σ = 20935472. Its totient is φ = 10467732.

The previous prime is 15701599. The next prime is 15701603. The reversal of 15701601 is 10610751.

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 an interprime number because it is at equal distance from previous prime (15701599) and next prime (15701603).

It is not a de Polignac number, because 15701601 - 2¹ = 15701599 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (15701603) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2616931 + ... + 2616936.

It is an arithmetic number, because the mean of its divisors is an integer number (5233868).

Almost surely, 2^15701601 is an apocalyptic number.

It is an amenable number.

15701601 is a deficient number, since it is larger than the sum of its proper divisors (5233871).

15701601 is an equidigital number, since it uses as much as digits as its factorization.

15701601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5233870.

The product of its (nonzero) digits is 210, while the sum is 21.

The square root of 15701601 is about 3962.5245740563. The cubic root of 15701601 is about 250.4078728637.

The spelling of 15701601 in words is "fifteen million, seven hundred one thousand, six hundred one".