2536401 has 16 divisors (see below), whose sum is σ = 3888000. Its totient is φ = 1440768.

The previous prime is 2536393. The next prime is 2536403. The reversal of 2536401 is 1046352.

It is a happy number.

It is not a de Polignac number, because 2536401 - 2³ = 2536393 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2536403) 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, 5425 + ... + 5873.

It is an arithmetic number, because the mean of its divisors is an integer number (243000).

2^2536401 is an apocalyptic number.

2536401 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2536401 is a deficient number, since it is larger than the sum of its proper divisors (1351599).

2536401 is a wasteful number, since it uses less digits than its factorization.

2536401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 728.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 2536401 is about 1592.6082380799. The cubic root of 2536401 is about 136.3764261539.

The spelling of 2536401 in words is "two million, five hundred thirty-six thousand, four hundred one".