15935401 has 4 divisors (see below), whose sum is σ = 16042500. Its totient is φ = 15828304.

The previous prime is 15935399. The next prime is 15935407. The reversal of 15935401 is 10453951.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4946176 + 10989225 = 2224^2 + 3315^2 .

It is a cyclic number.

It is not a de Polignac number, because 15935401 - 2¹ = 15935399 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 15935401.

It is not an unprimeable number, because it can be changed into a prime (15935407) 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, 53326 + ... + 53623.

It is an arithmetic number, because the mean of its divisors is an integer number (4010625).

Almost surely, 2^15935401 is an apocalyptic number.

It is an amenable number.

15935401 is a deficient number, since it is larger than the sum of its proper divisors (107099).

15935401 is a wasteful number, since it uses less digits than its factorization.

15935401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107098.

The product of its (nonzero) digits is 2700, while the sum is 28.

The square root of 15935401 is about 3991.9169580541. The cubic root of 15935401 is about 251.6446290563.

The spelling of 15935401 in words is "fifteen million, nine hundred thirty-five thousand, four hundred one".