89281537 has 4 divisors (see below), whose sum is σ = 89310256. Its totient is φ = 89252820.

The previous prime is 89281531. The next prime is 89281541. The reversal of 89281537 is 73518298.

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 a de Polignac number, because none of the positive numbers 2^k-89281537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89281493 and 89281502.

It is not an unprimeable number, because it can be changed into a prime (89281531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9039 + ... + 16132.

It is an arithmetic number, because the mean of its divisors is an integer number (22327564).

Almost surely, 2^89281537 is an apocalyptic number.

It is an amenable number.

89281537 is a deficient number, since it is larger than the sum of its proper divisors (28719).

89281537 is a wasteful number, since it uses less digits than its factorization.

89281537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28718.

The product of its digits is 120960, while the sum is 43.

The square root of 89281537 is about 9448.8907814621. The cubic root of 89281537 is about 446.9447971374.

The spelling of 89281537 in words is "eighty-nine million, two hundred eighty-one thousand, five hundred thirty-seven".