2251553146 has 4 divisors (see below), whose sum is σ = 3377329722. Its totient is φ = 1125776572.

The previous prime is 2251553123. The next prime is 2251553149. The reversal of 2251553146 is 6413551522.

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

It can be written as a sum of positive squares in only one way, i.e., 1862871921 + 388681225 = 43161^2 + 19715^2 .

It is not an unprimeable number, because it can be changed into a prime (2251553149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 562888285 + ... + 562888288.

Almost surely, 2^2251553146 is an apocalyptic number.

2251553146 is a deficient number, since it is larger than the sum of its proper divisors (1125776576).

2251553146 is a wasteful number, since it uses less digits than its factorization.

2251553146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1125776575.

The product of its digits is 36000, while the sum is 34.

The square root of 2251553146 is about 47450.5336745542. The cubic root of 2251553146 is about 1310.6721384224.

The spelling of 2251553146 in words is "two billion, two hundred fifty-one million, five hundred fifty-three thousand, one hundred forty-six".