84257001 has 12 divisors (see below), whose sum is σ = 128110320. Its totient is φ = 53214840.

The previous prime is 84256999. The next prime is 84257003. The reversal of 84257001 is 10075248.

It is an interprime number because it is at equal distance from previous prime (84256999) and next prime (84257003).

It is not a de Polignac number, because 84257001 - 2¹ = 84256999 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84257003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 246195 + ... + 246536.

It is an arithmetic number, because the mean of its divisors is an integer number (10675860).

Almost surely, 2^84257001 is an apocalyptic number.

It is an amenable number.

84257001 is a deficient number, since it is larger than the sum of its proper divisors (43853319).

84257001 is a wasteful number, since it uses less digits than its factorization.

84257001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492756 (or 492753 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 84257001 is about 9179.1612361915. The cubic root of 84257001 is about 438.3981024285.

The spelling of 84257001 in words is "eighty-four million, two hundred fifty-seven thousand, one".