61545503 has 16 divisors (see below), whose sum is σ = 66316800. Its totient is φ = 56946240.

The previous prime is 61545499. The next prime is 61545521. The reversal of 61545503 is 30554516.

It is a cyclic number.

It is not a de Polignac number, because 61545503 - 2² = 61545499 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61545553) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196475 + ... + 196787.

It is an arithmetic number, because the mean of its divisors is an integer number (4144800).

Almost surely, 2^61545503 is an apocalyptic number.

61545503 is a deficient number, since it is larger than the sum of its proper divisors (4771297).

61545503 is a wasteful number, since it uses less digits than its factorization.

61545503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 542.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 61545503 is about 7845.0941995619. The cubic root of 61545503 is about 394.8196645166.

The spelling of 61545503 in words is "sixty-one million, five hundred forty-five thousand, five hundred three".