423537553 has 2 divisors, whose sum is σ = 423537554. Its totient is φ = 423537552.

The previous prime is 423537529. The next prime is 423537563. The reversal of 423537553 is 355735324.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 306530064 + 117007489 = 17508^2 + 10817^2 .

It is a cyclic number.

It is not a de Polignac number, because 423537553 - 2¹⁷ = 423406481 is a prime.

It is not a weakly prime, because it can be changed into another prime (423537563) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 211768776 + 211768777.

It is an arithmetic number, because the mean of its divisors is an integer number (211768777).

Almost surely, 2^423537553 is an apocalyptic number.

It is an amenable number.

423537553 is a deficient number, since it is larger than the sum of its proper divisors (1).

423537553 is an equidigital number, since it uses as much as digits as its factorization.

423537553 is an evil number, because the sum of its binary digits is even.

The product of its digits is 189000, while the sum is 37.

The square root of 423537553 is about 20580.0280126146. The cubic root of 423537553 is about 750.9839252163.

The spelling of 423537553 in words is "four hundred twenty-three million, five hundred thirty-seven thousand, five hundred fifty-three".