2550431 has 4 divisors (see below), whose sum is σ = 2746632. Its totient is φ = 2354232.

The previous prime is 2550407. The next prime is 2550437. The reversal of 2550431 is 1340552.

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

It is a cyclic number.

It is not a de Polignac number, because 2550431 - 2⁶ = 2550367 is a prime.

It is a super-2 number, since 2×2550431² = 13009396571522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2550437) 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, 98081 + ... + 98106.

It is an arithmetic number, because the mean of its divisors is an integer number (686658).

2^2550431 is an apocalyptic number.

2550431 is a deficient number, since it is larger than the sum of its proper divisors (196201).

2550431 is a wasteful number, since it uses less digits than its factorization.

2550431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196200.

The product of its (nonzero) digits is 600, while the sum is 20.

The square root of 2550431 is about 1597.0068879000. The cubic root of 2550431 is about 136.6274175083.

Subtracting from 2550431 its sum of digits (20), we obtain a triangular number (2550411 = T₂₂₅₈).

Adding to 2550431 its reverse (1340552), we get a palindrome (3890983).

The spelling of 2550431 in words is "two million, five hundred fifty thousand, four hundred thirty-one".