61333057 has 4 divisors (see below), whose sum is σ = 63448020. Its totient is φ = 59218096.

The previous prime is 61333049. The next prime is 61333061. The reversal of 61333057 is 75033316.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 45643536 + 15689521 = 6756^2 + 3961^2 .

It is a cyclic number.

It is not a de Polignac number, because 61333057 - 2³ = 61333049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61334057) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1057438 + ... + 1057495.

It is an arithmetic number, because the mean of its divisors is an integer number (15862005).

Almost surely, 2^61333057 is an apocalyptic number.

It is an amenable number.

61333057 is a deficient number, since it is larger than the sum of its proper divisors (2114963).

61333057 is a wasteful number, since it uses less digits than its factorization.

61333057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2114962.

The product of its (nonzero) digits is 5670, while the sum is 28.

The square root of 61333057 is about 7831.5424406690. The cubic root of 61333057 is about 394.3648543832.

It can be divided in two parts, 613 and 33057, that added together give a triangular number (33670 = T₂₅₉).

The spelling of 61333057 in words is "sixty-one million, three hundred thirty-three thousand, fifty-seven".