5407781 has 2 divisors, whose sum is σ = 5407782. Its totient is φ = 5407780.

The previous prime is 5407747. The next prime is 5407789. The reversal of 5407781 is 1877045.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3422500 + 1985281 = 1850^2 + 1409^2 .

It is a cyclic number.

It is not a de Polignac number, because 5407781 - 2¹⁰ = 5406757 is a prime.

It is a super-2 number, since 2×5407781² = 58488190687922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5407789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2703890 + 2703891.

It is an arithmetic number, because the mean of its divisors is an integer number (2703891).

Almost surely, 2^5407781 is an apocalyptic number.

It is an amenable number.

5407781 is a deficient number, since it is larger than the sum of its proper divisors (1).

5407781 is an equidigital number, since it uses as much as digits as its factorization.

5407781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7840, while the sum is 32.

The square root of 5407781 is about 2325.4636096916. The cubic root of 5407781 is about 175.5252897109.

The spelling of 5407781 in words is "five million, four hundred seven thousand, seven hundred eighty-one".