61258021 has 8 divisors (see below), whose sum is σ = 70758144. Its totient is φ = 52413120.

The previous prime is 61258009. The next prime is 61258027. The reversal of 61258021 is 12085216.

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

It is a cyclic number.

It is not a de Polignac number, because 61258021 - 2⁷ = 61257893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61258027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 163605 + ... + 163978.

It is an arithmetic number, because the mean of its divisors is an integer number (8844768).

Almost surely, 2^61258021 is an apocalyptic number.

It is an amenable number.

61258021 is a deficient number, since it is larger than the sum of its proper divisors (9500123).

61258021 is a wasteful number, since it uses less digits than its factorization.

61258021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327611.

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 61258021 is about 7826.7503473664. The cubic root of 61258021 is about 394.2039643266.

The spelling of 61258021 in words is "sixty-one million, two hundred fifty-eight thousand, twenty-one".