2251555066 has 8 divisors (see below), whose sum is σ = 3379182624. Its totient is φ = 1125160860.

The previous prime is 2251555049. The next prime is 2251555067. The reversal of 2251555066 is 6605551522.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2251555067) 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, 303760 + ... + 311083.

It is an arithmetic number, because the mean of its divisors is an integer number (422397828).

Almost surely, 2^2251555066 is an apocalyptic number.

2251555066 is a deficient number, since it is larger than the sum of its proper divisors (1127627558).

2251555066 is a wasteful number, since it uses less digits than its factorization.

2251555066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 616676.

The product of its (nonzero) digits is 90000, while the sum is 37.

The square root of 2251555066 is about 47450.5539061453. The cubic root of 2251555066 is about 1310.6725109785.

The spelling of 2251555066 in words is "two billion, two hundred fifty-one million, five hundred fifty-five thousand, sixty-six".