61385651 has 4 divisors (see below), whose sum is σ = 62882904. Its totient is φ = 59888400.

The previous prime is 61385629. The next prime is 61385669. The reversal of 61385651 is 15658316.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 61385651 - 2¹⁰ = 61384627 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61385851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 748565 + ... + 748646.

It is an arithmetic number, because the mean of its divisors is an integer number (15720726).

Almost surely, 2^61385651 is an apocalyptic number.

61385651 is a deficient number, since it is larger than the sum of its proper divisors (1497253).

61385651 is a wasteful number, since it uses less digits than its factorization.

61385651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1497252.

The product of its digits is 21600, while the sum is 35.

The square root of 61385651 is about 7834.8995526427. The cubic root of 61385651 is about 394.4775467352.

The spelling of 61385651 in words is "sixty-one million, three hundred eighty-five thousand, six hundred fifty-one".