99555437 has 2 divisors, whose sum is σ = 99555438. Its totient is φ = 99555436.

The previous prime is 99555409. The next prime is 99555461. The reversal of 99555437 is 73455599.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78340201 + 21215236 = 8851^2 + 4606^2 .

It is a cyclic number.

It is not a de Polignac number, because 99555437 - 2¹⁴ = 99539053 is a prime.

It is a super-2 number, since 2×99555437² = 19822570072521938, 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 = 99555391 and 99555400.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99555487) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49777718 + 49777719.

It is an arithmetic number, because the mean of its divisors is an integer number (49777719).

Almost surely, 2^99555437 is an apocalyptic number.

It is an amenable number.

99555437 is a deficient number, since it is larger than the sum of its proper divisors (1).

99555437 is an equidigital number, since it uses as much as digits as its factorization.

99555437 is an evil number, because the sum of its binary digits is even.

The product of its digits is 850500, while the sum is 47.

The square root of 99555437 is about 9977.7470904007. The cubic root of 99555437 is about 463.4700353439.

The spelling of 99555437 in words is "ninety-nine million, five hundred fifty-five thousand, four hundred thirty-seven".