1053145621 has 4 divisors (see below), whose sum is σ = 1148886144. Its totient is φ = 957405100.

The previous prime is 1053145619. The next prime is 1053145657. The reversal of 1053145621 is 1265413501.

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 1053145621 - 2¹ = 1053145619 is a prime.

It is a super-2 number, since 2×1053145621² = 2218231398062951282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1053145621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053145601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47870245 + ... + 47870266.

It is an arithmetic number, because the mean of its divisors is an integer number (287221536).

Almost surely, 2^1053145621 is an apocalyptic number.

1053145621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1053145621 is a deficient number, since it is larger than the sum of its proper divisors (95740523).

1053145621 is an equidigital number, since it uses as much as digits as its factorization.

1053145621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95740522.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 1053145621 is about 32452.2051793095. The cubic root of 1053145621 is about 1017.4103283306.

The spelling of 1053145621 in words is "one billion, fifty-three million, one hundred forty-five thousand, six hundred twenty-one".