5451421091 has 2 divisors, whose sum is σ = 5451421092. Its totient is φ = 5451421090.

The previous prime is 5451421069. The next prime is 5451421097. The reversal of 5451421091 is 1901241545.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5451421091 - 2²² = 5447226787 is a prime.

It is a super-2 number, since 2×5451421091² = 59435983822799260562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (5451421097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2725710545 + 2725710546.

It is an arithmetic number, because the mean of its divisors is an integer number (2725710546).

Almost surely, 2^5451421091 is an apocalyptic number.

5451421091 is a deficient number, since it is larger than the sum of its proper divisors (1).

5451421091 is an equidigital number, since it uses as much as digits as its factorization.

5451421091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 5451421091 is about 73833.7395165652. The cubic root of 5451421091 is about 1759.9618073453.

The spelling of 5451421091 in words is "five billion, four hundred fifty-one million, four hundred twenty-one thousand, ninety-one".