1055204251 has 4 divisors (see below), whose sum is σ = 1059408504. Its totient is φ = 1051000000.

The previous prime is 1055204243. The next prime is 1055204261. The reversal of 1055204251 is 1524025501.

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 1055204251 - 2³ = 1055204243 is a prime.

It is a super-2 number, since 2×1055204251² = 2226912022656942002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1055204231) 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, 2101750 + ... + 2102251.

It is an arithmetic number, because the mean of its divisors is an integer number (264852126).

Almost surely, 2^1055204251 is an apocalyptic number.

1055204251 is a deficient number, since it is larger than the sum of its proper divisors (4204253).

1055204251 is an equidigital number, since it uses as much as digits as its factorization.

1055204251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4204252.

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 1055204251 is about 32483.9075697491. The cubic root of 1055204251 is about 1018.0728224004.

Adding to 1055204251 its reverse (1524025501), we get a palindrome (2579229752).

The spelling of 1055204251 in words is "one billion, fifty-five million, two hundred four thousand, two hundred fifty-one".