61851601 has 8 divisors (see below), whose sum is σ = 70890624. Its totient is φ = 52863360.

The previous prime is 61851589. The next prime is 61851613. The reversal of 61851601 is 10615816.

It is an interprime number because it is at equal distance from previous prime (61851589) and next prime (61851613).

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

It is a cyclic number.

It is not a de Polignac number, because 61851601 - 2⁷ = 61851473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 61851601.

It is not an unprimeable number, because it can be changed into a prime (61851401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10045 + ... + 14986.

It is an arithmetic number, because the mean of its divisors is an integer number (8861328).

Almost surely, 2^61851601 is an apocalyptic number.

It is an amenable number.

61851601 is a deficient number, since it is larger than the sum of its proper divisors (9039023).

61851601 is a wasteful number, since it uses less digits than its factorization.

61851601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25391.

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 61851601 is about 7864.5788825594. The cubic root of 61851601 is about 395.4731306495.

The spelling of 61851601 in words is "sixty-one million, eight hundred fifty-one thousand, six hundred one".