61851265 has 16 divisors (see below), whose sum is σ = 86427648. Its totient is φ = 41610816.

The previous prime is 61851263. The next prime is 61851269. The reversal of 61851265 is 56215816.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 61851265 - 2¹ = 61851263 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 61851265.

It is not an unprimeable number, because it can be changed into a prime (61851263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14817 + ... + 18526.

It is an arithmetic number, because the mean of its divisors is an integer number (5401728).

Almost surely, 2^61851265 is an apocalyptic number.

It is an amenable number.

61851265 is a deficient number, since it is larger than the sum of its proper divisors (24576383).

61851265 is a wasteful number, since it uses less digits than its factorization.

61851265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33408.

The product of its digits is 14400, while the sum is 34.

The square root of 61851265 is about 7864.5575209289. The cubic root of 61851265 is about 395.4724145310.

The spelling of 61851265 in words is "sixty-one million, eight hundred fifty-one thousand, two hundred sixty-five".