2574228021 has 4 divisors (see below), whose sum is σ = 3432304032. Its totient is φ = 1716152012.

The previous prime is 2574227989. The next prime is 2574228031. The reversal of 2574228021 is 1208224752.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2574228021 - 2⁵ = 2574227989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2574228031) 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, 429038001 + ... + 429038006.

It is an arithmetic number, because the mean of its divisors is an integer number (858076008).

Almost surely, 2^2574228021 is an apocalyptic number.

It is an amenable number.

2574228021 is a deficient number, since it is larger than the sum of its proper divisors (858076011).

2574228021 is an equidigital number, since it uses as much as digits as its factorization.

2574228021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 858076010.

The product of its (nonzero) digits is 17920, while the sum is 33.

The square root of 2574228021 is about 50736.8507201620. The cubic root of 2574228021 is about 1370.5104072581.

The spelling of 2574228021 in words is "two billion, five hundred seventy-four million, two hundred twenty-eight thousand, twenty-one".