84737531 has 2 divisors, whose sum is σ = 84737532. Its totient is φ = 84737530.

The previous prime is 84737519. The next prime is 84737561. The reversal of 84737531 is 13573748.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84737531 - 2⁶ = 84737467 is a prime.

It is a super-2 number, since 2×84737531² = 14360898319951922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (84737561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42368765 + 42368766.

It is an arithmetic number, because the mean of its divisors is an integer number (42368766).

Almost surely, 2^84737531 is an apocalyptic number.

84737531 is a deficient number, since it is larger than the sum of its proper divisors (1).

84737531 is an equidigital number, since it uses as much as digits as its factorization.

84737531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 70560, while the sum is 38.

The square root of 84737531 is about 9205.2990717304. The cubic root of 84737531 is about 439.2299392306.

The spelling of 84737531 in words is "eighty-four million, seven hundred thirty-seven thousand, five hundred thirty-one".