89693551 has 2 divisors, whose sum is σ = 89693552. Its totient is φ = 89693550.

The previous prime is 89693507. The next prime is 89693557. The reversal of 89693551 is 15539698.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 89693551 - 2¹³ = 89685359 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89693557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44846775 + 44846776.

It is an arithmetic number, because the mean of its divisors is an integer number (44846776).

Almost surely, 2^89693551 is an apocalyptic number.

89693551 is a deficient number, since it is larger than the sum of its proper divisors (1).

89693551 is an equidigital number, since it uses as much as digits as its factorization.

89693551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 291600, while the sum is 46.

The square root of 89693551 is about 9470.6679278708. The cubic root of 89693551 is about 447.6312584802.

The spelling of 89693551 in words is "eighty-nine million, six hundred ninety-three thousand, five hundred fifty-one".