84148551 has 20 divisors (see below), whose sum is σ = 126637632. Its totient is φ = 55682208.

The previous prime is 84148531. The next prime is 84148553. The reversal of 84148551 is 15584148.

It is not a de Polignac number, because 84148551 - 2⁷ = 84148423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84148553) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 7306 + ... + 14888.

Almost surely, 2^84148551 is an apocalyptic number.

84148551 is a gapful number since it is divisible by the number (81) formed by its first and last digit.

84148551 is a deficient number, since it is larger than the sum of its proper divisors (42489081).

84148551 is a wasteful number, since it uses less digits than its factorization.

84148551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7732 (or 7723 counting only the distinct ones).

The product of its digits is 25600, while the sum is 36.

The square root of 84148551 is about 9173.2519315671. The cubic root of 84148551 is about 438.2099293911.

The spelling of 84148551 in words is "eighty-four million, one hundred forty-eight thousand, five hundred fifty-one".