52128458 has 8 divisors (see below), whose sum is σ = 78223620. Its totient is φ = 26053920.

The previous prime is 52128421. The next prime is 52128467. The reversal of 52128458 is 85482125.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47789569 + 4338889 = 6913^2 + 2083^2 .

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

It is a super-2 number, since 2×52128458² = 5434752266915528, which contains 22 as substring.

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, 5948 + ... + 11816.

Almost surely, 2^52128458 is an apocalyptic number.

52128458 is a deficient number, since it is larger than the sum of its proper divisors (26095162).

52128458 is a wasteful number, since it uses less digits than its factorization.

52128458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10312.

The product of its digits is 25600, while the sum is 35.

The square root of 52128458 is about 7220.0040166194. The cubic root of 52128458 is about 373.5582160916.

The spelling of 52128458 in words is "fifty-two million, one hundred twenty-eight thousand, four hundred fifty-eight".