61015057 has 8 divisors (see below), whose sum is σ = 65515392. Its totient is φ = 56616000.

The previous prime is 61015051. The next prime is 61015063. The reversal of 61015057 is 75051016.

It is an interprime number because it is at equal distance from previous prime (61015051) and next prime (61015063).

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 61015057 - 2³ = 61015049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61015051) 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, 24069 + ... + 26482.

It is an arithmetic number, because the mean of its divisors is an integer number (8189424).

Almost surely, 2^61015057 is an apocalyptic number.

It is an amenable number.

61015057 is a deficient number, since it is larger than the sum of its proper divisors (4500335).

61015057 is a wasteful number, since it uses less digits than its factorization.

61015057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50639.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 61015057 is about 7811.2135420817. The cubic root of 61015057 is about 393.6821046282.

The spelling of 61015057 in words is "sixty-one million, fifteen thousand, fifty-seven".