99542261 has 8 divisors (see below), whose sum is σ = 122513664. Its totient is φ = 78758640.

The previous prime is 99542257. The next prime is 99542269. The reversal of 99542261 is 16224599.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99542261 - 2² = 99542257 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99542269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 546845 + ... + 547026.

It is an arithmetic number, because the mean of its divisors is an integer number (15314208).

Almost surely, 2^99542261 is an apocalyptic number.

99542261 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

99542261 is a deficient number, since it is larger than the sum of its proper divisors (22971403).

99542261 is a wasteful number, since it uses less digits than its factorization.

99542261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093891.

The product of its digits is 38880, while the sum is 38.

The square root of 99542261 is about 9977.0867992616. The cubic root of 99542261 is about 463.4495879403.

The spelling of 99542261 in words is "ninety-nine million, five hundred forty-two thousand, two hundred sixty-one".