61061544 has 48 divisors (see below), whose sum is σ = 169852020. Its totient is φ = 19802880.

The previous prime is 61061513. The next prime is 61061551. The reversal of 61061544 is 44516016.

61061544 is a `hidden beast` number, since 6 + 1 + 0 + 615 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 58339044 + 2722500 = 7638^2 + 1650^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8797 + ... + 14124.

Almost surely, 2^61061544 is an apocalyptic number.

It is an amenable number.

61061544 is an abundant number, since it is smaller than the sum of its proper divisors (108790476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61061544 is a wasteful number, since it uses less digits than its factorization.

61061544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22970 (or 22963 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 61061544 is about 7814.1886335051. The cubic root of 61061544 is about 393.7820605792.

The spelling of 61061544 in words is "sixty-one million, sixty-one thousand, five hundred forty-four".