61038903 has 4 divisors (see below), whose sum is σ = 81385208. Its totient is φ = 40692600.

The previous prime is 61038883. The next prime is 61038911. The reversal of 61038903 is 30983016.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 61038903 - 2²⁰ = 59990327 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61038953) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10173148 + ... + 10173153.

It is an arithmetic number, because the mean of its divisors is an integer number (20346302).

Almost surely, 2^61038903 is an apocalyptic number.

61038903 is a deficient number, since it is larger than the sum of its proper divisors (20346305).

61038903 is a wasteful number, since it uses less digits than its factorization.

61038903 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20346304.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 61038903 is about 7812.7397883201. The cubic root of 61038903 is about 393.7333844337.

The spelling of 61038903 in words is "sixty-one million, thirty-eight thousand, nine hundred three".