52721742 has 8 divisors (see below), whose sum is σ = 105443496. Its totient is φ = 17573912.

The previous prime is 52721737. The next prime is 52721759. The reversal of 52721742 is 24712725.

It is a sphenic number, since it is the product of 3 distinct primes.

52721742 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4393473 + ... + 4393484.

It is an arithmetic number, because the mean of its divisors is an integer number (13180437).

Almost surely, 2^52721742 is an apocalyptic number.

52721742 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

52721742 is a wasteful number, since it uses less digits than its factorization.

52721742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8786962.

The product of its digits is 7840, while the sum is 30.

The square root of 52721742 is about 7260.9739016195. The cubic root of 52721742 is about 374.9700527196.

The spelling of 52721742 in words is "fifty-two million, seven hundred twenty-one thousand, seven hundred forty-two".