2551207 has 16 divisors (see below), whose sum is σ = 2875392. Its totient is φ = 2252160.

The previous prime is 2551177. The next prime is 2551223. The reversal of 2551207 is 7021552.

It is not a de Polignac number, because 2551207 - 2⁷ = 2551079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2551247) 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, 24718 + ... + 24820.

It is an arithmetic number, because the mean of its divisors is an integer number (179712).

2^2551207 is an apocalyptic number.

2551207 is the 799-th decagonal number.

2551207 is a deficient number, since it is larger than the sum of its proper divisors (324185).

2551207 is a wasteful number, since it uses less digits than its factorization.

2551207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 2551207 is about 1597.2498239161. The cubic root of 2551207 is about 136.6412729606.

Adding to 2551207 its reverse (7021552), we get a palindrome (9572759).

The spelling of 2551207 in words is "two million, five hundred fifty-one thousand, two hundred seven".