1056212653 has 4 divisors (see below), whose sum is σ = 1056291840. Its totient is φ = 1056133468.

The previous prime is 1056212639. The next prime is 1056212657. The reversal of 1056212653 is 3562126501.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1056212653 is a prime.

It is a super-2 number, since 2×1056212653² = 2231170336714596818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1056212657) 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, 14125 + ... + 48082.

It is an arithmetic number, because the mean of its divisors is an integer number (264072960).

Almost surely, 2^1056212653 is an apocalyptic number.

It is an amenable number.

1056212653 is a deficient number, since it is larger than the sum of its proper divisors (79187).

1056212653 is an equidigital number, since it uses as much as digits as its factorization.

1056212653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79186.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 1056212653 is about 32499.4254256902. The cubic root of 1056212653 is about 1018.3970249777.

The spelling of 1056212653 in words is "one billion, fifty-six million, two hundred twelve thousand, six hundred fifty-three".