61251603 has 16 divisors (see below), whose sum is σ = 93811200. Its totient is φ = 34822656.

The previous prime is 61251587. The next prime is 61251607. The reversal of 61251603 is 30615216.

It is not a de Polignac number, because 61251603 - 2⁴ = 61251587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61251607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3150 + ... + 11507.

It is an arithmetic number, because the mean of its divisors is an integer number (5863200).

Almost surely, 2^61251603 is an apocalyptic number.

61251603 is a deficient number, since it is larger than the sum of its proper divisors (32559597).

61251603 is a wasteful number, since it uses less digits than its factorization.

61251603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14866.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 61251603 is about 7826.3403324926. The cubic root of 61251603 is about 394.1901969355.

Adding to 61251603 its reverse (30615216), we get a palindrome (91866819).

The spelling of 61251603 in words is "sixty-one million, two hundred fifty-one thousand, six hundred three".