2551345 has 8 divisors (see below), whose sum is σ = 3084480. Its totient is φ = 2025840.

The previous prime is 2551313. The next prime is 2551349. The reversal of 2551345 is 5431552.

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

It is not a de Polignac number, because 2551345 - 2⁵ = 2551313 is a prime.

It is a super-2 number, since 2×2551345² = 13018722618050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2551349) 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, 1141 + ... + 2530.

It is an arithmetic number, because the mean of its divisors is an integer number (385560).

2^2551345 is an apocalyptic number.

It is an amenable number.

2551345 is a deficient number, since it is larger than the sum of its proper divisors (533135).

2551345 is a wasteful number, since it uses less digits than its factorization.

2551345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3815.

The product of its digits is 3000, while the sum is 25.

The square root of 2551345 is about 1597.2930225854. The cubic root of 2551345 is about 136.6437366514.

Adding to 2551345 its reverse (5431552), we get a palindrome (7982897).

It can be divided in two parts, 255 and 1345, that added together give a square (1600 = 40²).

The spelling of 2551345 in words is "two million, five hundred fifty-one thousand, three hundred forty-five".