53815734 has 48 divisors (see below), whose sum is σ = 134008992. Its totient is φ = 15289344.

The previous prime is 53815711. The next prime is 53815753. The reversal of 53815734 is 43751835.

53815734 is a `hidden beast` number, since 5 + 3 + 81 + 573 + 4 = 666.

It is a super-2 number, since 2×53815734² = 5792266451917512, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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, 23212 + ... + 25424.

It is an arithmetic number, because the mean of its divisors is an integer number (2791854).

Almost surely, 2^53815734 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53815734, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67004496).

53815734 is an abundant number, since it is smaller than the sum of its proper divisors (80193258).

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

53815734 is a wasteful number, since it uses less digits than its factorization.

53815734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2421 (or 2418 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 53815734 is about 7335.9208010992. The cubic root of 53815734 is about 377.5458979616.

The spelling of 53815734 in words is "fifty-three million, eight hundred fifteen thousand, seven hundred thirty-four".