61141945 has 16 divisors (see below), whose sum is σ = 79789968. Its totient is φ = 44789760.

The previous prime is 61141939. The next prime is 61141957. The reversal of 61141945 is 54914116.

It can be written as a sum of positive squares in 8 ways, for example, as 1605289 + 59536656 = 1267^2 + 7716^2 .

It is not a de Polignac number, because 61141945 - 2⁹ = 61141433 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6576 + ... + 12865.

It is an arithmetic number, because the mean of its divisors is an integer number (4986873).

Almost surely, 2^61141945 is an apocalyptic number.

It is an amenable number.

61141945 is a deficient number, since it is larger than the sum of its proper divisors (18648023).

61141945 is a wasteful number, since it uses less digits than its factorization.

61141945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19500.

The product of its digits is 4320, while the sum is 31.

The square root of 61141945 is about 7819.3314931649. The cubic root of 61141945 is about 393.9548184424.

The spelling of 61141945 in words is "sixty-one million, one hundred forty-one thousand, nine hundred forty-five".