552537991 has 2 divisors, whose sum is σ = 552537992. Its totient is φ = 552537990.

The previous prime is 552537967. The next prime is 552538001. The reversal of 552537991 is 199735255.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 552537991 - 2⁵ = 552537959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (552537091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276268995 + 276268996.

It is an arithmetic number, because the mean of its divisors is an integer number (276268996).

Almost surely, 2^552537991 is an apocalyptic number.

552537991 is a deficient number, since it is larger than the sum of its proper divisors (1).

552537991 is an equidigital number, since it uses as much as digits as its factorization.

552537991 is an evil number, because the sum of its binary digits is even.

The product of its digits is 425250, while the sum is 46.

The square root of 552537991 is about 23506.1266694451. The cubic root of 552537991 is about 820.5795976646.

The spelling of 552537991 in words is "five hundred fifty-two million, five hundred thirty-seven thousand, nine hundred ninety-one".