84049551 has 6 divisors (see below), whose sum is σ = 121404920. Its totient is φ = 56033028.

The previous prime is 84049543. The next prime is 84049561. The reversal of 84049551 is 15594048.

It is not a de Polignac number, because 84049551 - 2³ = 84049543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84049501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4669411 + ... + 4669428.

Almost surely, 2^84049551 is an apocalyptic number.

84049551 is a deficient number, since it is larger than the sum of its proper divisors (37355369).

84049551 is a wasteful number, since it uses less digits than its factorization.

84049551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9338845 (or 9338842 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 84049551 is about 9167.8542200452. The cubic root of 84049551 is about 438.0380119634.

It can be divided in two parts, 8404 and 9551, that added together give a triangular number (17955 = T₁₈₉).

The spelling of 84049551 in words is "eighty-four million, forty-nine thousand, five hundred fifty-one".