5420401251 has 4 divisors (see below), whose sum is σ = 7227201672. Its totient is φ = 3613600832.

The previous prime is 5420401241. The next prime is 5420401253. The reversal of 5420401251 is 1521040245.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5420401251 - 2⁷ = 5420401123 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5420401253) 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 3 ways as a sum of consecutive naturals, for example, 903400206 + ... + 903400211.

It is an arithmetic number, because the mean of its divisors is an integer number (1806800418).

Almost surely, 2^5420401251 is an apocalyptic number.

5420401251 is a deficient number, since it is larger than the sum of its proper divisors (1806800421).

5420401251 is a wasteful number, since it uses less digits than its factorization.

5420401251 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1806800420.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 5420401251 is about 73623.3743521716. The cubic root of 5420401251 is about 1756.6172597095.

Adding to 5420401251 its reverse (1521040245), we get a palindrome (6941441496).

The spelling of 5420401251 in words is "five billion, four hundred twenty million, four hundred one thousand, two hundred fifty-one".