64201551 has 8 divisors (see below), whose sum is σ = 90107520. Its totient is φ = 40548312.

The previous prime is 64201547. The next prime is 64201561. The reversal of 64201551 is 15510246.

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

It is not a de Polignac number, because 64201551 - 2² = 64201547 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64201541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 563115 + ... + 563228.

It is an arithmetic number, because the mean of its divisors is an integer number (11263440).

Almost surely, 2^64201551 is an apocalyptic number.

64201551 is a deficient number, since it is larger than the sum of its proper divisors (25905969).

64201551 is a wasteful number, since it uses less digits than its factorization.

64201551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126365.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 64201551 is about 8012.5870354087. The cubic root of 64201551 is about 400.4194579006.

Adding to 64201551 its reverse (15510246), we get a palindrome (79711797).

The spelling of 64201551 in words is "sixty-four million, two hundred one thousand, five hundred fifty-one".