5490661801 has 3 divisors (see below), whose sum is σ = 5490735901. Its totient is φ = 5490587702.

The previous prime is 5490661769. The next prime is 5490661807. The reversal of 5490661801 is 1081660945.

The square root of 5490661801 is 74099.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1081660945 = 5 ⋅216332189.

It is not a de Polignac number, because 5490661801 - 2⁵ = 5490661769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5490661807) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 37050 + ... + 111148.

Almost surely, 2^5490661801 is an apocalyptic number.

5490661801 is the 74099-th square number.

5490661801 is the 37050-th centered octagonal number.

It is an amenable number.

5490661801 is a deficient number, since it is larger than the sum of its proper divisors (74100).

5490661801 is an frugal number, since it uses more digits than its factorization.

5490661801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148198 (or 74099 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The cubic root of 5490661801 is about 1764.1745988543.

The spelling of 5490661801 in words is "five billion, four hundred ninety million, six hundred sixty-one thousand, eight hundred one".