5461037721 has 12 divisors (see below), whose sum is σ = 8352175572. Its totient is φ = 3426533376.

The previous prime is 5461037663. The next prime is 5461037723. The reversal of 5461037721 is 1277301645.

It is a happy number.

5461037721 is a `hidden beast` number, since 5 + 4 + 610 + 37 + 7 + 2 + 1 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1882605321 + 3578432400 = 43389^2 + 59820^2 .

It is not a de Polignac number, because 5461037721 - 2⁶ = 5461037657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5461037723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17846376 + ... + 17846681.

It is an arithmetic number, because the mean of its divisors is an integer number (696014631).

Almost surely, 2^5461037721 is an apocalyptic number.

5461037721 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

5461037721 is a deficient number, since it is larger than the sum of its proper divisors (2891137851).

5461037721 is a wasteful number, since it uses less digits than its factorization.

5461037721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35693080 (or 35693077 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 5461037721 is about 73898.8343683444. The cubic root of 5461037721 is about 1760.9960917272.

The spelling of 5461037721 in words is "five billion, four hundred sixty-one million, thirty-seven thousand, seven hundred twenty-one".