61432045 has 4 divisors (see below), whose sum is σ = 73718460. Its totient is φ = 49145632.

The previous prime is 61432043. The next prime is 61432069. The reversal of 61432045 is 54023416.

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 35022724 + 26409321 = 5918^2 + 5139^2 .

It is a cyclic number.

It is not a de Polignac number, because 61432045 - 2¹ = 61432043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61432043) 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, 6143200 + ... + 6143209.

It is an arithmetic number, because the mean of its divisors is an integer number (18429615).

Almost surely, 2^61432045 is an apocalyptic number.

It is an amenable number.

61432045 is a deficient number, since it is larger than the sum of its proper divisors (12286415).

61432045 is a wasteful number, since it uses less digits than its factorization.

61432045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12286414.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 61432045 is about 7837.8597206125. The cubic root of 61432045 is about 394.5769010215.

The spelling of 61432045 in words is "sixty-one million, four hundred thirty-two thousand, forty-five".