5401052021 has 4 divisors (see below), whose sum is σ = 5415769152. Its totient is φ = 5386334892.

The previous prime is 5401052011. The next prime is 5401052029. The reversal of 5401052021 is 1202501045.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1202501045 = 5 ⋅240500209.

It is a cyclic number.

It is not a de Polignac number, because 5401052021 - 2¹⁰ = 5401050997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5401051984 and 5401052002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5401052029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7358015 + ... + 7358748.

It is an arithmetic number, because the mean of its divisors is an integer number (1353942288).

Almost surely, 2^5401052021 is an apocalyptic number.

It is an amenable number.

5401052021 is a deficient number, since it is larger than the sum of its proper divisors (14717131).

5401052021 is a wasteful number, since it uses less digits than its factorization.

5401052021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14717130.

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 5401052021 is about 73491.8500311429. The cubic root of 5401052021 is about 1754.5245661990.

Adding to 5401052021 its reverse (1202501045), we get a palindrome (6603553066).

The spelling of 5401052021 in words is "five billion, four hundred one million, fifty-two thousand, twenty-one".