61500045 has 16 divisors (see below), whose sum is σ = 102678912. Its totient is φ = 31373760.

The previous prime is 61499993. The next prime is 61500059. The reversal of 61500045 is 54000516.

It is a happy number.

It is not a de Polignac number, because 61500045 - 2⁹ = 61499533 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 61499994 and 61500030.

It is a congruent 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, 88786 + ... + 89475.

It is an arithmetic number, because the mean of its divisors is an integer number (6417432).

Almost surely, 2^61500045 is an apocalyptic number.

It is an amenable number.

61500045 is a deficient number, since it is larger than the sum of its proper divisors (41178867).

61500045 is a wasteful number, since it uses less digits than its factorization.

61500045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178292.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 61500045 is about 7842.1964397737. The cubic root of 61500045 is about 394.7224349221.

It can be divided in two parts, 6 and 1500045, that added together give a palindrome (1500051).

The spelling of 61500045 in words is "sixty-one million, five hundred thousand, forty-five".