2403402551 has 6 divisors (see below), whose sum is σ = 2641756656. Its totient is φ = 2184911300.

The previous prime is 2403402541. The next prime is 2403402581. The reversal of 2403402551 is 1552043042.

It is a happy number.

It is not a de Polignac number, because 2403402551 - 2¹⁸ = 2403140407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2403402551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2403402541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9931295 + ... + 9931536.

It is an arithmetic number, because the mean of its divisors is an integer number (440292776).

Almost surely, 2^2403402551 is an apocalyptic number.

2403402551 is a deficient number, since it is larger than the sum of its proper divisors (238354105).

2403402551 is a wasteful number, since it uses less digits than its factorization.

2403402551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19862853 (or 19862842 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2403402551 is about 49024.5096966813. The cubic root of 2403402551 is about 1339.4983179909.

Adding to 2403402551 its reverse (1552043042), we get a palindrome (3955445593).

The spelling of 2403402551 in words is "two billion, four hundred three million, four hundred two thousand, five hundred fifty-one".