2402551 has 4 divisors (see below), whose sum is σ = 2405704. Its totient is φ = 2399400.

The previous prime is 2402549. The next prime is 2402567. The reversal of 2402551 is 1552042.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2402551 - 2¹ = 2402549 is a prime.

It is a Duffinian number.

2402551 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2402501) 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, 361 + ... + 2221.

It is an arithmetic number, because the mean of its divisors is an integer number (601426).

2^2402551 is an apocalyptic number.

2402551 is a deficient number, since it is larger than the sum of its proper divisors (3153).

2402551 is a wasteful number, since it uses less digits than its factorization.

2402551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3152.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 2402551 is about 1550.0164515256. The cubic root of 2402551 is about 133.9340099819.

Adding to 2402551 its reverse (1552042), we get a palindrome (3954593).

The spelling of 2402551 in words is "two million, four hundred two thousand, five hundred fifty-one".