1055022251 has 4 divisors (see below), whose sum is σ = 1055318352. Its totient is φ = 1054726152.

The previous prime is 1055022239. The next prime is 1055022277. The reversal of 1055022251 is 1522205501.

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 1055022251 - 2¹⁸ = 1054760107 is a prime.

It is a super-2 number, since 2×1055022251² = 2226143900210214002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055022281) 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, 142640 + ... + 149853.

It is an arithmetic number, because the mean of its divisors is an integer number (263829588).

Almost surely, 2^1055022251 is an apocalyptic number.

1055022251 is a deficient number, since it is larger than the sum of its proper divisors (296101).

1055022251 is an equidigital number, since it uses as much as digits as its factorization.

1055022251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 296100.

The product of its (nonzero) digits is 1000, while the sum is 23.

The square root of 1055022251 is about 32481.1060618323. The cubic root of 1055022251 is about 1018.0142871588.

Adding to 1055022251 its reverse (1522205501), we get a palindrome (2577227752).

The spelling of 1055022251 in words is "one billion, fifty-five million, twenty-two thousand, two hundred fifty-one".