53391546 has 48 divisors (see below), whose sum is σ = 125110440. Its totient is φ = 16358400.

The previous prime is 53391491. The next prime is 53391551. The reversal of 53391546 is 64519335.

It can be written as a sum of positive squares in 4 ways, for example, as 44156025 + 9235521 = 6645^2 + 3039^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 53391546.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 93550 + ... + 94118.

Almost surely, 2^53391546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53391546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62555220).

53391546 is an abundant number, since it is smaller than the sum of its proper divisors (71718894).

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

53391546 is a wasteful number, since it uses less digits than its factorization.

53391546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991 (or 988 counting only the distinct ones).

The product of its digits is 48600, while the sum is 36.

The square root of 53391546 is about 7306.9518952844. The cubic root of 53391546 is about 376.5513122977.

The spelling of 53391546 in words is "fifty-three million, three hundred ninety-one thousand, five hundred forty-six".