5420731 has 2 divisors, whose sum is σ = 5420732. Its totient is φ = 5420730.

The previous prime is 5420729. The next prime is 5420747. The reversal of 5420731 is 1370245.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5420731 - 2¹ = 5420729 is a prime.

It is a super-2 number, since 2×5420731² = 58768649148722, which contains 22 as substring.

Together with 5420729, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (5420711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2710365 + 2710366.

It is an arithmetic number, because the mean of its divisors is an integer number (2710366).

Almost surely, 2^5420731 is an apocalyptic number.

5420731 is the 1245-th centered heptagonal number.

5420731 is a deficient number, since it is larger than the sum of its proper divisors (1).

5420731 is an equidigital number, since it uses as much as digits as its factorization.

5420731 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 840, while the sum is 22.

The square root of 5420731 is about 2328.2463357643. The cubic root of 5420731 is about 175.6652880138.

Adding to 5420731 its reverse (1370245), we get a palindrome (6790976).

The spelling of 5420731 in words is "five million, four hundred twenty thousand, seven hundred thirty-one".