65055881 has 4 divisors (see below), whose sum is σ = 70970064. Its totient is φ = 59141700.

The previous prime is 65055871. The next prime is 65055883. The reversal of 65055881 is 18855056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 65055881 - 2¹⁴ = 65039497 is a prime.

It is a super-2 number, since 2×65055881² = 8464535305372322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (65055883) 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, 2957075 + ... + 2957096.

It is an arithmetic number, because the mean of its divisors is an integer number (17742516).

Almost surely, 2^65055881 is an apocalyptic number.

It is an amenable number.

65055881 is a deficient number, since it is larger than the sum of its proper divisors (5914183).

65055881 is a wasteful number, since it uses less digits than its factorization.

65055881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5914182.

The product of its (nonzero) digits is 48000, while the sum is 38.

The square root of 65055881 is about 8065.7225962712. The cubic root of 65055881 is about 402.1877644845.

The spelling of 65055881 in words is "sixty-five million, fifty-five thousand, eight hundred eighty-one".