61650057 has 8 divisors (see below), whose sum is σ = 93942976. Its totient is φ = 35228592.

The previous prime is 61650049. The next prime is 61650067. The reversal of 61650057 is 75005616.

61650057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 61650057 - 2³ = 61650049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61650037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1467838 + ... + 1467879.

It is an arithmetic number, because the mean of its divisors is an integer number (11742872).

Almost surely, 2^61650057 is an apocalyptic number.

It is an amenable number.

61650057 is a deficient number, since it is larger than the sum of its proper divisors (32292919).

61650057 is a wasteful number, since it uses less digits than its factorization.

61650057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2935727.

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 61650057 is about 7851.7550267440. The cubic root of 61650057 is about 395.0431123162.

The spelling of 61650057 in words is "sixty-one million, six hundred fifty thousand, fifty-seven".