83149551 has 8 divisors (see below), whose sum is σ = 123184560. Its totient is φ = 55433016.

The previous prime is 83149543. The next prime is 83149553. The reversal of 83149551 is 15594138.

It is not a de Polignac number, because 83149551 - 2³ = 83149543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83149553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1539780 + ... + 1539833.

It is an arithmetic number, because the mean of its divisors is an integer number (15398070).

Almost surely, 2^83149551 is an apocalyptic number.

83149551 is a deficient number, since it is larger than the sum of its proper divisors (40035009).

83149551 is a wasteful number, since it uses less digits than its factorization.

83149551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3079622 (or 3079616 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 83149551 is about 9118.6375627064. The cubic root of 83149551 is about 436.4688987181.

The spelling of 83149551 in words is "eighty-three million, one hundred forty-nine thousand, five hundred fifty-one".