4721121057 has 4 divisors (see below), whose sum is σ = 6294828080. Its totient is φ = 3147414036.

The previous prime is 4721121029. The next prime is 4721121061. The reversal of 4721121057 is 7501211274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 4721121057 - 2¹⁴ = 4721104673 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4721121557) 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, 786853507 + ... + 786853512.

It is an arithmetic number, because the mean of its divisors is an integer number (1573707020).

Almost surely, 2^4721121057 is an apocalyptic number.

It is an amenable number.

4721121057 is a deficient number, since it is larger than the sum of its proper divisors (1573707023).

4721121057 is a wasteful number, since it uses less digits than its factorization.

4721121057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1573707022.

The product of its (nonzero) digits is 3920, while the sum is 30.

The square root of 4721121057 is about 68710.4144726256. The cubic root of 4721121057 is about 1677.5740989817.

The spelling of 4721121057 in words is "four billion, seven hundred twenty-one million, one hundred twenty-one thousand, fifty-seven".