65412551 has 4 divisors (see below), whose sum is σ = 65610504. Its totient is φ = 65214600.

The previous prime is 65412541. The next prime is 65412563. The reversal of 65412551 is 15521456.

It is a happy number.

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 65412551 - 2¹⁴ = 65396167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65412521) 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, 98480 + ... + 99141.

It is an arithmetic number, because the mean of its divisors is an integer number (16402626).

Almost surely, 2^65412551 is an apocalyptic number.

65412551 is a deficient number, since it is larger than the sum of its proper divisors (197953).

65412551 is a wasteful number, since it uses less digits than its factorization.

65412551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197952.

The product of its digits is 6000, while the sum is 29.

The square root of 65412551 is about 8087.8026063944. The cubic root of 65412551 is about 402.9214258164.

The spelling of 65412551 in words is "sixty-five million, four hundred twelve thousand, five hundred fifty-one".