78287541 has 8 divisors (see below), whose sum is σ = 104878944. Its totient is φ = 51943920.

The previous prime is 78287537. The next prime is 78287621. The reversal of 78287541 is 14578287.

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

It is not a de Polignac number, because 78287541 - 2² = 78287537 is a prime.

It is a super-2 number, since 2×78287541² = 12257878151653362, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78287493 and 78287502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78287641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61206 + ... + 62471.

It is an arithmetic number, because the mean of its divisors is an integer number (13109868).

Almost surely, 2^78287541 is an apocalyptic number.

It is an amenable number.

78287541 is a deficient number, since it is larger than the sum of its proper divisors (26591403).

78287541 is a wasteful number, since it uses less digits than its factorization.

78287541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123891.

The product of its digits is 125440, while the sum is 42.

The square root of 78287541 is about 8848.0246948118. The cubic root of 78287541 is about 427.7902519154.

The spelling of 78287541 in words is "seventy-eight million, two hundred eighty-seven thousand, five hundred forty-one".