81046150 has 12 divisors (see below), whose sum is σ = 150745932. Its totient is φ = 32418440.

The previous prime is 81046139. The next prime is 81046151. The reversal of 81046150 is 5164018.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a zygodrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81046151) 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, 810412 + ... + 810511.

It is an arithmetic number, because the mean of its divisors is an integer number (12562161).

Almost surely, 2^81046150 is an apocalyptic number.

81046150 is a deficient number, since it is larger than the sum of its proper divisors (69699782).

81046150 is a wasteful number, since it uses less digits than its factorization.

81046150 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620935 (or 1620930 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The square root of 81046150 is about 9002.5635237970. The cubic root of 81046150 is about 432.7570281055.

The spelling of 81046150 in words is "eighty-one million, forty-six thousand, one hundred fifty".