61505027 has 4 divisors (see below), whose sum is σ = 63625920. Its totient is φ = 59384136.

The previous prime is 61505021. The next prime is 61505029. The reversal of 61505027 is 72050516.

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 61505027 - 2⁸ = 61504771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61504987 and 61505005.

It is not an unprimeable number, because it can be changed into a prime (61505021) 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, 1060403 + ... + 1060460.

It is an arithmetic number, because the mean of its divisors is an integer number (15906480).

Almost surely, 2^61505027 is an apocalyptic number.

61505027 is a deficient number, since it is larger than the sum of its proper divisors (2120893).

61505027 is a wasteful number, since it uses less digits than its factorization.

61505027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2120892.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 61505027 is about 7842.5140739434. The cubic root of 61505027 is about 394.7330932020.

The spelling of 61505027 in words is "sixty-one million, five hundred five thousand, twenty-seven".