4651610521 has 4 divisors (see below), whose sum is σ = 4651794532. Its totient is φ = 4651426512.

The previous prime is 4651610507. The next prime is 4651610531. The reversal of 4651610521 is 1250161564.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4294967296 + 356643225 = 65536^2 + 18885^2 .

It is a cyclic number.

It is not a de Polignac number, because 4651610521 - 2⁵ = 4651610489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4651610531) 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, 46626 + ... + 107131.

It is an arithmetic number, because the mean of its divisors is an integer number (1162948633).

Almost surely, 2^4651610521 is an apocalyptic number.

It is an amenable number.

4651610521 is a deficient number, since it is larger than the sum of its proper divisors (184011).

4651610521 is a wasteful number, since it uses less digits than its factorization.

4651610521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184010.

The product of its (nonzero) digits is 7200, while the sum is 31.

The square root of 4651610521 is about 68202.7163755228. The cubic root of 4651610521 is about 1669.3002101087.

The spelling of 4651610521 in words is "four billion, six hundred fifty-one million, six hundred ten thousand, five hundred twenty-one".