5511521651 has 8 divisors (see below), whose sum is σ = 5718797184. Its totient is φ = 5306088960.

The previous prime is 5511521647. The next prime is 5511521683. The reversal of 5511521651 is 1561251155.

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

It is not a de Polignac number, because 5511521651 - 2² = 5511521647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5511521611) 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, 454616 + ... + 466581.

It is an arithmetic number, because the mean of its divisors is an integer number (714849648).

Almost surely, 2^5511521651 is an apocalyptic number.

5511521651 is a deficient number, since it is larger than the sum of its proper divisors (207275533).

5511521651 is a wasteful number, since it uses less digits than its factorization.

5511521651 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 921421.

The product of its digits is 7500, while the sum is 32.

The square root of 5511521651 is about 74239.6231873519. The cubic root of 5511521651 is about 1766.4058971028.

The spelling of 5511521651 in words is "five billion, five hundred eleven million, five hundred twenty-one thousand, six hundred fifty-one".