61050247 has 4 divisors (see below), whose sum is σ = 64641456. Its totient is φ = 57459040.

The previous prime is 61050229. The next prime is 61050289. The reversal of 61050247 is 74205016.

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

It is a cyclic number.

It is not a de Polignac number, because 61050247 - 2²³ = 52661639 is a prime.

It is a super-2 number, since 2×61050247² = 7454265317522018, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61050347) 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, 1795579 + ... + 1795612.

It is an arithmetic number, because the mean of its divisors is an integer number (16160364).

Almost surely, 2^61050247 is an apocalyptic number.

61050247 is a deficient number, since it is larger than the sum of its proper divisors (3591209).

61050247 is a wasteful number, since it uses less digits than its factorization.

61050247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3591208.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 61050247 is about 7813.4657483091. The cubic root of 61050247 is about 393.7577745337.

The spelling of 61050247 in words is "sixty-one million, fifty thousand, two hundred forty-seven".