99211537 has 2 divisors, whose sum is σ = 99211538. Its totient is φ = 99211536.

The previous prime is 99211517. The next prime is 99211543. The reversal of 99211537 is 73511299.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76895361 + 22316176 = 8769^2 + 4724^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99211537 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99211496 and 99211505.

It is not a weakly prime, because it can be changed into another prime (99211517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49605768 + 49605769.

It is an arithmetic number, because the mean of its divisors is an integer number (49605769).

Almost surely, 2^99211537 is an apocalyptic number.

It is an amenable number.

99211537 is a deficient number, since it is larger than the sum of its proper divisors (1).

99211537 is an equidigital number, since it uses as much as digits as its factorization.

99211537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17010, while the sum is 37.

The square root of 99211537 is about 9960.4988328898. The cubic root of 99211537 is about 462.9357560522.

The spelling of 99211537 in words is "ninety-nine million, two hundred eleven thousand, five hundred thirty-seven".