2251613720 has 16 divisors (see below), whose sum is σ = 5066130960. Its totient is φ = 900645472.

The previous prime is 2251613717. The next prime is 2251613723. The reversal of 2251613720 is 273161522.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2251613717) and next prime (2251613723).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2251613723) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 28145132 + ... + 28145211.

It is an arithmetic number, because the mean of its divisors is an integer number (316633185).

Almost surely, 2^2251613720 is an apocalyptic number.

2251613720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2251613720 is an abundant number, since it is smaller than the sum of its proper divisors (2814517240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2251613720 is a wasteful number, since it uses less digits than its factorization.

2251613720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56290354 (or 56290350 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 2251613720 is about 47451.1719560223. The cubic root of 2251613720 is about 1310.6838920782.

The spelling of 2251613720 in words is "two billion, two hundred fifty-one million, six hundred thirteen thousand, seven hundred twenty".