61057223 has 4 divisors (see below), whose sum is σ = 61252608. Its totient is φ = 60861840.

The previous prime is 61057211. The next prime is 61057229. The reversal of 61057223 is 32275016.

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 61057223 - 2¹⁰ = 61056199 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 61057192 and 61057201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61057229) 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, 97223 + ... + 97848.

It is an arithmetic number, because the mean of its divisors is an integer number (15313152).

Almost surely, 2^61057223 is an apocalyptic number.

61057223 is a deficient number, since it is larger than the sum of its proper divisors (195385).

61057223 is a wasteful number, since it uses less digits than its factorization.

61057223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195384.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 61057223 is about 7813.9121443743. The cubic root of 61057223 is about 393.7727717409.

The spelling of 61057223 in words is "sixty-one million, fifty-seven thousand, two hundred twenty-three".