1053451021 has 16 divisors (see below), whose sum is σ = 1244113920. Its totient is φ = 872893440.

The previous prime is 1053451001. The next prime is 1053451027. The reversal of 1053451021 is 1201543501.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1053451021 - 2²³ = 1045062413 is a prime.

It is a super-2 number, since 2×1053451021² = 2219518107291884882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1053450983 and 1053451001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053451027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 262095 + ... + 266083.

It is an arithmetic number, because the mean of its divisors is an integer number (77757120).

Almost surely, 2^1053451021 is an apocalyptic number.

It is an amenable number.

1053451021 is a deficient number, since it is larger than the sum of its proper divisors (190662899).

1053451021 is a wasteful number, since it uses less digits than its factorization.

1053451021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5244.

The product of its (nonzero) digits is 600, while the sum is 22.

The square root of 1053451021 is about 32456.9102195511. The cubic root of 1053451021 is about 1017.5086645524.

Adding to 1053451021 its reverse (1201543501), we get a palindrome (2254994522).

The spelling of 1053451021 in words is "one billion, fifty-three million, four hundred fifty-one thousand, twenty-one".