61253121 has 8 divisors (see below), whose sum is σ = 81847584. Its totient is φ = 40747040.

The previous prime is 61253099. The next prime is 61253147. The reversal of 61253121 is 12135216.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-61253121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61253921) 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 7 ways as a sum of consecutive naturals, for example, 20460 + ... + 23261.

It is an arithmetic number, because the mean of its divisors is an integer number (10230948).

Almost surely, 2^61253121 is an apocalyptic number.

It is an amenable number.

61253121 is a deficient number, since it is larger than the sum of its proper divisors (20594463).

61253121 is a wasteful number, since it uses less digits than its factorization.

61253121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44191.

The product of its digits is 360, while the sum is 21.

The square root of 61253121 is about 7826.4373120852. The cubic root of 61253121 is about 394.1934533170.

Adding to 61253121 its reverse (12135216), we get a palindrome (73388337).

The spelling of 61253121 in words is "sixty-one million, two hundred fifty-three thousand, one hundred twenty-one".