2251155707 has 4 divisors (see below), whose sum is σ = 2251286640. Its totient is φ = 2251024776.

The previous prime is 2251155703. The next prime is 2251155721. The reversal of 2251155707 is 7075511522.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2251155707 - 2² = 2251155703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2251155703) 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, 34928 + ... + 75645.

It is an arithmetic number, because the mean of its divisors is an integer number (562821660).

Almost surely, 2^2251155707 is an apocalyptic number.

2251155707 is a deficient number, since it is larger than the sum of its proper divisors (130933).

2251155707 is a wasteful number, since it uses less digits than its factorization.

2251155707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130932.

The product of its (nonzero) digits is 24500, while the sum is 35.

The square root of 2251155707 is about 47446.3455600113. The cubic root of 2251155707 is about 1310.5950149372.

The spelling of 2251155707 in words is "two billion, two hundred fifty-one million, one hundred fifty-five thousand, seven hundred seven".