752421091 has 2 divisors, whose sum is σ = 752421092. Its totient is φ = 752421090.

The previous prime is 752421083. The next prime is 752421097. The reversal of 752421091 is 190124257.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 752421091 - 2³ = 752421083 is a prime.

It is a super-2 number, since 2×752421091² = 1132274996363260562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (752421097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 376210545 + 376210546.

It is an arithmetic number, because the mean of its divisors is an integer number (376210546).

Almost surely, 2^752421091 is an apocalyptic number.

752421091 is a deficient number, since it is larger than the sum of its proper divisors (1).

752421091 is an equidigital number, since it uses as much as digits as its factorization.

752421091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5040, while the sum is 31.

The square root of 752421091 is about 27430.2951314783. The cubic root of 752421091 is about 909.5368939354.

The spelling of 752421091 in words is "seven hundred fifty-two million, four hundred twenty-one thousand, ninety-one".