2945551 has 8 divisors (see below), whose sum is σ = 3543680. Its totient is φ = 2391768.

The previous prime is 2945531. The next prime is 2945609. The reversal of 2945551 is 1555492.

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

It is a cyclic number.

It is not a de Polignac number, because 2945551 - 2⁵ = 2945519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2945531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10941 + ... + 11206.

It is an arithmetic number, because the mean of its divisors is an integer number (442960).

2^2945551 is an apocalyptic number.

2945551 is a deficient number, since it is larger than the sum of its proper divisors (598129).

2945551 is a wasteful number, since it uses less digits than its factorization.

2945551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22173.

The product of its digits is 9000, while the sum is 31.

The square root of 2945551 is about 1716.2607610733. The cubic root of 2945551 is about 143.3470793860.

The spelling of 2945551 in words is "two million, nine hundred forty-five thousand, five hundred fifty-one".