61534445 has 24 divisors (see below), whose sum is σ = 90424800. Its totient is φ = 39971232.

The previous prime is 61534439. The next prime is 61534469. The reversal of 61534445 is 54443516.

It is not a de Polignac number, because 61534445 - 2⁸ = 61534189 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1955 + ... + 11264.

It is an arithmetic number, because the mean of its divisors is an integer number (3767700).

Almost surely, 2^61534445 is an apocalyptic number.

It is an amenable number.

61534445 is a deficient number, since it is larger than the sum of its proper divisors (28890355).

61534445 is a wasteful number, since it uses less digits than its factorization.

61534445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13257 (or 13250 counting only the distinct ones).

The product of its digits is 28800, while the sum is 32.

The square root of 61534445 is about 7844.3893962500. The cubic root of 61534445 is about 394.7960170951.

The spelling of 61534445 in words is "sixty-one million, five hundred thirty-four thousand, four hundred forty-five".