2400531 has 8 divisors (see below), whose sum is σ = 3657984. Its totient is φ = 1371720.

The previous prime is 2400521. The next prime is 2400551. The reversal of 2400531 is 1350042.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2400531 - 2⁹ = 2400019 is a prime.

It is a super-2 number, since 2×2400531² = 11525098163922, which contains 22 as substring.

2400531 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 2400531.

It is not an unprimeable number, because it can be changed into a prime (2400511) 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, 57135 + ... + 57176.

It is an arithmetic number, because the mean of its divisors is an integer number (457248).

2^2400531 is an apocalyptic number.

2400531 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2400531 is a deficient number, since it is larger than the sum of its proper divisors (1257453).

2400531 is a wasteful number, since it uses less digits than its factorization.

2400531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114321.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 2400531 is about 1549.3647085177. The cubic root of 2400531 is about 133.8964634243.

Adding to 2400531 its reverse (1350042), we get a palindrome (3750573).

The spelling of 2400531 in words is "two million, four hundred thousand, five hundred thirty-one".