61241945 has 4 divisors (see below), whose sum is σ = 73490340. Its totient is φ = 48993552.

The previous prime is 61241927. The next prime is 61241969. The reversal of 61241945 is 54914216.

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 40347904 + 20894041 = 6352^2 + 4571^2 .

It is a cyclic number.

It is not a de Polignac number, because 61241945 - 2¹⁴ = 61225561 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6124190 + ... + 6124199.

It is an arithmetic number, because the mean of its divisors is an integer number (18372585).

Almost surely, 2^61241945 is an apocalyptic number.

It is an amenable number.

61241945 is a deficient number, since it is larger than the sum of its proper divisors (12248395).

61241945 is a wasteful number, since it uses less digits than its factorization.

61241945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12248394.

The product of its digits is 8640, while the sum is 32.

The square root of 61241945 is about 7825.7232892558. The cubic root of 61241945 is about 394.1694775374.

The spelling of 61241945 in words is "sixty-one million, two hundred forty-one thousand, nine hundred forty-five".