2751920421 has 8 divisors (see below), whose sum is σ = 3731417760. Its totient is φ = 1803518352.

The previous prime is 2751920419. The next prime is 2751920459. The reversal of 2751920421 is 1240291572.

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

It is not a de Polignac number, because 2751920421 - 2¹ = 2751920419 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2751920401) 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, 7773610 + ... + 7773963.

It is an arithmetic number, because the mean of its divisors is an integer number (466427220).

Almost surely, 2^2751920421 is an apocalyptic number.

It is an amenable number.

2751920421 is a deficient number, since it is larger than the sum of its proper divisors (979497339).

2751920421 is a wasteful number, since it uses less digits than its factorization.

2751920421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15547635.

The product of its (nonzero) digits is 10080, while the sum is 33.

The square root of 2751920421 is about 52458.7497086997. The cubic root of 2751920421 is about 1401.3457164221.

The spelling of 2751920421 in words is "two billion, seven hundred fifty-one million, nine hundred twenty thousand, four hundred twenty-one".