213550739 has 2 divisors, whose sum is σ = 213550740. Its totient is φ = 213550738.

The previous prime is 213550721. The next prime is 213550763. The reversal of 213550739 is 937055312.

It is a happy number.

213550739 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 213550739 - 2¹⁶ = 213485203 is a prime.

It is a super-2 number, since 2×213550739² = 91207836254892242, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 213550699 and 213550708.

It is not a weakly prime, because it can be changed into another prime (213550789) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106775369 + 106775370.

It is an arithmetic number, because the mean of its divisors is an integer number (106775370).

Almost surely, 2^213550739 is an apocalyptic number.

213550739 is a deficient number, since it is larger than the sum of its proper divisors (1).

213550739 is an equidigital number, since it uses as much as digits as its factorization.

213550739 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28350, while the sum is 35.

The square root of 213550739 is about 14613.3753458946. The cubic root of 213550739 is about 597.7235395438.

The spelling of 213550739 in words is "two hundred thirteen million, five hundred fifty thousand, seven hundred thirty-nine".