641610051 has 8 divisors (see below), whose sum is σ = 856170000. Its totient is φ = 427395072.

The previous prime is 641610049. The next prime is 641610061. The reversal of 641610051 is 150016146.

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

It is not a de Polignac number, because 641610051 - 2¹ = 641610049 is a prime.

It is not an unprimeable number, because it can be changed into a prime (641610041) 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, 81870 + ... + 89363.

It is an arithmetic number, because the mean of its divisors is an integer number (107021250).

Almost surely, 2^641610051 is an apocalyptic number.

641610051 is a deficient number, since it is larger than the sum of its proper divisors (214559949).

641610051 is a wasteful number, since it uses less digits than its factorization.

641610051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172485.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 641610051 is about 25330.0227200846. The cubic root of 641610051 is about 862.4959270549.

Adding to 641610051 its reverse (150016146), we get a palindrome (791626197).

It can be divided in two parts, 64 and 1610051, that added together give a triangular number (1610115 = T₁₇₉₄).

The spelling of 641610051 in words is "six hundred forty-one million, six hundred ten thousand, fifty-one".