61047215 has 8 divisors (see below), whose sum is σ = 75619968. Its totient is φ = 47262240.

The previous prime is 61047197. The next prime is 61047227. The reversal of 61047215 is 51274016.

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

It is not a de Polignac number, because 61047215 - 2⁸ = 61046959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196772 + ... + 197081.

It is an arithmetic number, because the mean of its divisors is an integer number (9452496).

Almost surely, 2^61047215 is an apocalyptic number.

61047215 is a deficient number, since it is larger than the sum of its proper divisors (14572753).

61047215 is a wasteful number, since it uses less digits than its factorization.

61047215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393889.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 61047215 is about 7813.2717218845. The cubic root of 61047215 is about 393.7512558959.

The spelling of 61047215 in words is "sixty-one million, forty-seven thousand, two hundred fifteen".