2251361402 has 16 divisors (see below), whose sum is σ = 3416333760. Its totient is φ = 1112659488.

The previous prime is 2251361389. The next prime is 2251361419. The reversal of 2251361402 is 2041631522.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40958 + ... + 78614.

It is an arithmetic number, because the mean of its divisors is an integer number (213520860).

Almost surely, 2^2251361402 is an apocalyptic number.

2251361402 is a deficient number, since it is larger than the sum of its proper divisors (1164972358).

2251361402 is a wasteful number, since it uses less digits than its factorization.

2251361402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38005.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 2251361402 is about 47448.5131695399. The cubic root of 2251361402 is about 1310.6349314166.

Adding to 2251361402 its reverse (2041631522), we get a palindrome (4292992924).

The spelling of 2251361402 in words is "two billion, two hundred fifty-one million, three hundred sixty-one thousand, four hundred two".