88921257 has 4 divisors (see below), whose sum is σ = 118561680. Its totient is φ = 59280836.

The previous prime is 88921247. The next prime is 88921277. The reversal of 88921257 is 75212988.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 88921257 - 2⁴ = 88921241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (88921247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14820207 + ... + 14820212.

It is an arithmetic number, because the mean of its divisors is an integer number (29640420).

Almost surely, 2^88921257 is an apocalyptic number.

It is an amenable number.

88921257 is a deficient number, since it is larger than the sum of its proper divisors (29640423).

88921257 is a wasteful number, since it uses less digits than its factorization.

88921257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29640422.

The product of its digits is 80640, while the sum is 42.

The square root of 88921257 is about 9429.8068378944. The cubic root of 88921257 is about 446.3427975145.

The spelling of 88921257 in words is "eighty-eight million, nine hundred twenty-one thousand, two hundred fifty-seven".