61292073 has 4 divisors (see below), whose sum is σ = 81722768. Its totient is φ = 40861380.

The previous prime is 61292057. The next prime is 61292083. The reversal of 61292073 is 37029216.

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 not a de Polignac number, because 61292073 - 2⁴ = 61292057 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61292073.

It is not an unprimeable number, because it can be changed into a prime (61292083) 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, 10215343 + ... + 10215348.

It is an arithmetic number, because the mean of its divisors is an integer number (20430692).

Almost surely, 2^61292073 is an apocalyptic number.

It is an amenable number.

61292073 is a deficient number, since it is larger than the sum of its proper divisors (20430695).

61292073 is a wasteful number, since it uses less digits than its factorization.

61292073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20430694.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 61292073 is about 7828.9254051881. The cubic root of 61292073 is about 394.2769939298.

The spelling of 61292073 in words is "sixty-one million, two hundred ninety-two thousand, seventy-three".