61298505 has 16 divisors (see below), whose sum is σ = 108975360. Its totient is φ = 32692464.

The previous prime is 61298477. The next prime is 61298513. The reversal of 61298505 is 50589216.

It is a happy number.

61298505 is a `hidden beast` number, since 61 + 2 + 98 + 505 = 666.

It is not a de Polignac number, because 61298505 - 2⁶ = 61298441 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

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

It is a self number, because there is not a number n which added to its sum of digits gives 61298505.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 226897 + ... + 227166.

It is an arithmetic number, because the mean of its divisors is an integer number (6810960).

Almost surely, 2^61298505 is an apocalyptic number.

It is an amenable number.

61298505 is a deficient number, since it is larger than the sum of its proper divisors (47676855).

61298505 is a wasteful number, since it uses less digits than its factorization.

61298505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 454077 (or 454071 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 36.

The square root of 61298505 is about 7829.3361787574. The cubic root of 61298505 is about 394.2907852777.

The spelling of 61298505 in words is "sixty-one million, two hundred ninety-eight thousand, five hundred five".