291098052 has 36 divisors (see below), whose sum is σ = 840950656. Its totient is φ = 83170800.

The previous prime is 291098033. The next prime is 291098053. The reversal of 291098052 is 250890192.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×291098052³ (a number of 26 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 291097998 and 291098016.

It is not an unprimeable number, because it can be changed into a prime (291098053) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 577324 + ... + 577827.

Almost surely, 2^291098052 is an apocalyptic number.

It is an amenable number.

291098052 is an abundant number, since it is smaller than the sum of its proper divisors (549852604).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291098052 is a wasteful number, since it uses less digits than its factorization.

291098052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1155168 (or 1155163 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 291098052 is about 17061.5958221967. The cubic root of 291098052 is about 662.7449589941.

The spelling of 291098052 in words is "two hundred ninety-one million, ninety-eight thousand, fifty-two".