84001537 has 4 divisors (see below), whose sum is σ = 86711296. Its totient is φ = 81291780.

The previous prime is 84001517. The next prime is 84001553. The reversal of 84001537 is 73510048.

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 84001537 - 2¹⁹ = 83477249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84001517) 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, 1354833 + ... + 1354894.

It is an arithmetic number, because the mean of its divisors is an integer number (21677824).

Almost surely, 2^84001537 is an apocalyptic number.

It is an amenable number.

84001537 is a deficient number, since it is larger than the sum of its proper divisors (2709759).

84001537 is a wasteful number, since it uses less digits than its factorization.

84001537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2709758.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 84001537 is about 9165.2352397524. The cubic root of 84001537 is about 437.9545851316.

The spelling of 84001537 in words is "eighty-four million, one thousand, five hundred thirty-seven".