61342445 has 4 divisors (see below), whose sum is σ = 73610940. Its totient is φ = 49073952.

The previous prime is 61342441. The next prime is 61342447. The reversal of 61342445 is 54424316.

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

It can be written as a sum of positive squares in 2 ways, for example, as 12033961 + 49308484 = 3469^2 + 7022^2 .

It is a cyclic number.

It is not a de Polignac number, because 61342445 - 2² = 61342441 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61342441) 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, 6134240 + ... + 6134249.

It is an arithmetic number, because the mean of its divisors is an integer number (18402735).

Almost surely, 2^61342445 is an apocalyptic number.

It is an amenable number.

61342445 is a deficient number, since it is larger than the sum of its proper divisors (12268495).

61342445 is a wasteful number, since it uses less digits than its factorization.

61342445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268494.

The product of its digits is 11520, while the sum is 29.

The square root of 61342445 is about 7832.1417888085. The cubic root of 61342445 is about 394.3849746281.

The spelling of 61342445 in words is "sixty-one million, three hundred forty-two thousand, four hundred forty-five".