61235215 has 16 divisors (see below), whose sum is σ = 75116160. Its totient is φ = 47908000.

The previous prime is 61235203. The next prime is 61235231. The reversal of 61235215 is 51253216.

It is not a de Polignac number, because 61235215 - 2¹⁵ = 61202447 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61235215.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73632 + ... + 74458.

It is an arithmetic number, because the mean of its divisors is an integer number (4694760).

Almost surely, 2^61235215 is an apocalyptic number.

61235215 is a deficient number, since it is larger than the sum of its proper divisors (13880945).

61235215 is a wasteful number, since it uses less digits than its factorization.

61235215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1142.

The product of its digits is 1800, while the sum is 25.

The square root of 61235215 is about 7825.2932852386. The cubic root of 61235215 is about 394.1550383173.

The spelling of 61235215 in words is "sixty-one million, two hundred thirty-five thousand, two hundred fifteen".