61060091 has 4 divisors (see below), whose sum is σ = 64273800. Its totient is φ = 57846384.

The previous prime is 61060079. The next prime is 61060099. The reversal of 61060091 is 19006016.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61060091 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61060099) 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, 1606826 + ... + 1606863.

It is an arithmetic number, because the mean of its divisors is an integer number (16068450).

Almost surely, 2^61060091 is an apocalyptic number.

61060091 is a deficient number, since it is larger than the sum of its proper divisors (3213709).

61060091 is a wasteful number, since it uses less digits than its factorization.

61060091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213708.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 61060091 is about 7814.0956610474. The cubic root of 61060091 is about 393.7789371191.

The spelling of 61060091 in words is "sixty-one million, sixty thousand, ninety-one".