53426556 has 54 divisors (see below), whose sum is σ = 142567152. Its totient is φ = 16867440.

The previous prime is 53426551. The next prime is 53426591. The reversal of 53426556 is 65562435.

It is a happy number.

It is a super-2 number, since 2×53426556² = 5708793772042272, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 53426556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53426551) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 10941 + ... + 15051.

Almost surely, 2^53426556 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53426556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71283576).

53426556 is an abundant number, since it is smaller than the sum of its proper divisors (89140596).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

53426556 is a wasteful number, since it uses less digits than its factorization.

53426556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4159 (or 4135 counting only the distinct ones).

The product of its digits is 108000, while the sum is 36.

The square root of 53426556 is about 7309.3471664712. The cubic root of 53426556 is about 376.6335986146.

The spelling of 53426556 in words is "fifty-three million, four hundred twenty-six thousand, five hundred fifty-six".