2501406 has 12 divisors (see below), whose sum is σ = 5419752. Its totient is φ = 833796.

The previous prime is 2501399. The next prime is 2501413. The reversal of 2501406 is 6041052.

It is a happy number.

2501406 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (2501399) and next prime (2501413).

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 138967 = 2501406 / (2 + 5 + 0 + 1 + 4 + 0 + 6).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 69466 + ... + 69501.

It is an arithmetic number, because the mean of its divisors is an integer number (451646).

2^2501406 is an apocalyptic number.

2501406 is an abundant number, since it is smaller than the sum of its proper divisors (2918346).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2501406 is a wasteful number, since it uses less digits than its factorization.

2501406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138975 (or 138972 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2501406 is about 1581.5833838277. The cubic root of 2501406 is about 135.7463192026.

Adding to 2501406 its reverse (6041052), we get a palindrome (8542458).

The spelling of 2501406 in words is "two million, five hundred one thousand, four hundred six".