61012503 has 12 divisors (see below), whose sum is σ = 88280920. Its totient is φ = 40604976.

The previous prime is 61012499. The next prime is 61012513. The reversal of 61012503 is 30521016.

61012503 is a `hidden beast` number, since 610 + 1 + 2 + 50 + 3 = 666.

It is not a de Polignac number, because 61012503 - 2² = 61012499 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 (61012513) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13 + ... + 11046.

Almost surely, 2^61012503 is an apocalyptic number.

61012503 is a deficient number, since it is larger than the sum of its proper divisors (27268417).

61012503 is a wasteful number, since it uses less digits than its factorization.

61012503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11678 (or 11675 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 61012503 is about 7811.0500574507. The cubic root of 61012503 is about 393.6766115681.

Adding to 61012503 its reverse (30521016), we get a palindrome (91533519).

The spelling of 61012503 in words is "sixty-one million, twelve thousand, five hundred three".