53715690 has 128 divisors (see below), whose sum is σ = 165957120. Its totient is φ = 12109824.

The previous prime is 53715677. The next prime is 53715703. The reversal of 53715690 is 9651735.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53715677) and next prime (53715703).

It is a super-2 number, since 2×53715690² = 5770750704352200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 183184 + ... + 183476.

It is an arithmetic number, because the mean of its divisors is an integer number (1296540).

Almost surely, 2^53715690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53715690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82978560).

53715690 is an abundant number, since it is smaller than the sum of its proper divisors (112241430).

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

53715690 is a wasteful number, since it uses less digits than its factorization.

53715690 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413 (or 407 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 53715690 is about 7329.0988532015. The cubic root of 53715690 is about 377.3117989420.

The spelling of 53715690 in words is "fifty-three million, seven hundred fifteen thousand, six hundred ninety".