4051449801 has 45 divisors (see below), whose sum is σ = 6842840199. Its totient is φ = 2309767488.

The previous prime is 4051449769. The next prime is 4051449803. The reversal of 4051449801 is 1089441504.

The square root of 4051449801 is 63651.

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

It can be written as a sum of positive squares in only one way, i.e., 454329225 + 3597120576 = 21315^2 + 59976^2 .

It is not a de Polignac number, because 4051449801 - 2⁵ = 4051449769 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4051449803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 9356481 + ... + 9356913.

Almost surely, 2^4051449801 is an apocalyptic number.

4051449801 is the 63651-st square number.

4051449801 is the 31826-th centered octagonal number.

It is an amenable number.

4051449801 is a deficient number, since it is larger than the sum of its proper divisors (2791390398).

4051449801 is an frugal number, since it uses more digits than its factorization.

4051449801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900 (or 443 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The cubic root of 4051449801 is about 1594.1780339783.

Multiplying 4051449801 by its sum of digits (36), we get a square (145852192836 = 381906²).

The spelling of 4051449801 in words is "four billion, fifty-one million, four hundred forty-nine thousand, eight hundred one".