5021658 has 12 divisors (see below), whose sum is σ = 10880298. Its totient is φ = 1673880.

The previous prime is 5021657. The next prime is 5021663. The reversal of 5021658 is 8561205.

5021658 is a `hidden beast` number, since 5 + 0 + 2 + 1 + 658 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4549689 + 471969 = 2133^2 + 687^2 .

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (5021657) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139473 + ... + 139508.

Almost surely, 2^5021658 is an apocalyptic number.

5021658 is an abundant number, since it is smaller than the sum of its proper divisors (5858640).

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

5021658 is a wasteful number, since it uses less digits than its factorization.

5021658 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278989 (or 278986 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 5021658 is about 2240.9056205026. The cubic root of 5021658 is about 171.2441367627.

The spelling of 5021658 in words is "five million, twenty-one thousand, six hundred fifty-eight".