84781541 has 8 divisors (see below), whose sum is σ = 93771384. Its totient is φ = 76144320.

The previous prime is 84781531. The next prime is 84781547. The reversal of 84781541 is 14518748.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 17048641 + 67732900 = 4129^2 + 8230^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84781541 - 2¹⁴ = 84765157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 84781495 and 84781504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84781547) 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, 87650 + ... + 88611.

It is an arithmetic number, because the mean of its divisors is an integer number (11721423).

Almost surely, 2^84781541 is an apocalyptic number.

It is an amenable number.

84781541 is a deficient number, since it is larger than the sum of its proper divisors (8989843).

84781541 is a wasteful number, since it uses less digits than its factorization.

84781541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176311.

The product of its digits is 35840, while the sum is 38.

The square root of 84781541 is about 9207.6892323753. The cubic root of 84781541 is about 439.3059667940.

The spelling of 84781541 in words is "eighty-four million, seven hundred eighty-one thousand, five hundred forty-one".