61251573 has 16 divisors (see below), whose sum is σ = 86156480. Its totient is φ = 38600064.

The previous prime is 61251559. The next prime is 61251577. The reversal of 61251573 is 37515216.

It is not a de Polignac number, because 61251573 - 2⁴ = 61251557 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61251573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61251577) 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, 34065 + ... + 35817.

It is an arithmetic number, because the mean of its divisors is an integer number (5384780).

Almost surely, 2^61251573 is an apocalyptic number.

It is an amenable number.

61251573 is a deficient number, since it is larger than the sum of its proper divisors (24904907).

61251573 is a wasteful number, since it uses less digits than its factorization.

61251573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2388.

The product of its digits is 6300, while the sum is 30.

The square root of 61251573 is about 7826.3384158877. The cubic root of 61251573 is about 394.1901325795.

Adding to 61251573 its reverse (37515216), we get a palindrome (98766789).

The spelling of 61251573 in words is "sixty-one million, two hundred fifty-one thousand, five hundred seventy-three".