61652251 has 8 divisors (see below), whose sum is σ = 65445840. Its totient is φ = 57877248.

The previous prime is 61652209. The next prime is 61652257. The reversal of 61652251 is 15225616.

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

It is not a de Polignac number, because 61652251 - 2⁹ = 61651739 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61652257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2520 + ... + 11386.

It is an arithmetic number, because the mean of its divisors is an integer number (8180730).

Almost surely, 2^61652251 is an apocalyptic number.

61652251 is a deficient number, since it is larger than the sum of its proper divisors (3793589).

61652251 is a wasteful number, since it uses less digits than its factorization.

61652251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9293.

The product of its digits is 3600, while the sum is 28.

The square root of 61652251 is about 7851.8947394880. The cubic root of 61652251 is about 395.0477985206.

Adding to 61652251 its reverse (15225616), we get a palindrome (76877867).

The spelling of 61652251 in words is "sixty-one million, six hundred fifty-two thousand, two hundred fifty-one".