61097073 has 4 divisors (see below), whose sum is σ = 81462768. Its totient is φ = 40731380.

The previous prime is 61097053. The next prime is 61097081. The reversal of 61097073 is 37079016.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61097073 - 2⁵ = 61097041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61097053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10182843 + ... + 10182848.

It is an arithmetic number, because the mean of its divisors is an integer number (20365692).

Almost surely, 2^61097073 is an apocalyptic number.

It is an amenable number.

61097073 is a deficient number, since it is larger than the sum of its proper divisors (20365695).

61097073 is a wasteful number, since it uses less digits than its factorization.

61097073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20365694.

The product of its (nonzero) digits is 7938, while the sum is 33.

The square root of 61097073 is about 7816.4616675322. The cubic root of 61097073 is about 393.8584205338.

The spelling of 61097073 in words is "sixty-one million, ninety-seven thousand, seventy-three".