53956074421 has 4 divisors (see below), whose sum is σ = 53956554592. Its totient is φ = 53955594252.

The previous prime is 53956074409. The next prime is 53956074433. The reversal of 53956074421 is 12447065935.

It is a happy number.

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 an interprime number because it is at equal distance from previous prime (53956074409) and next prime (53956074433).

It is a cyclic number.

It is not a de Polignac number, because 53956074421 - 2¹⁹ = 53955550133 is a prime.

It is a super-2 number, since 2×53956074421² (a number of 22 digits) 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 (53956077421) 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, 28990 + ... + 329776.

It is an arithmetic number, because the mean of its divisors is an integer number (13489138648).

Almost surely, 2^53956074421 is an apocalyptic number.

It is an amenable number.

53956074421 is a deficient number, since it is larger than the sum of its proper divisors (480171).

53956074421 is a wasteful number, since it uses less digits than its factorization.

53956074421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 480170.

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 53956074421 in words is "fifty-three billion, nine hundred fifty-six million, seventy-four thousand, four hundred twenty-one".