61124215 has 4 divisors (see below), whose sum is σ = 73349064. Its totient is φ = 48899368.

The previous prime is 61124213. The next prime is 61124233. The reversal of 61124215 is 51242116.

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 61124215 - 2¹ = 61124213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61124213) 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, 6112417 + ... + 6112426.

It is an arithmetic number, because the mean of its divisors is an integer number (18337266).

Almost surely, 2^61124215 is an apocalyptic number.

61124215 is a deficient number, since it is larger than the sum of its proper divisors (12224849).

61124215 is a wasteful number, since it uses less digits than its factorization.

61124215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12224848.

The product of its digits is 480, while the sum is 22.

The square root of 61124215 is about 7818.1976823306. The cubic root of 61124215 is about 393.9167349620.

The spelling of 61124215 in words is "sixty-one million, one hundred twenty-four thousand, two hundred fifteen".