78250558 has 16 divisors (see below), whose sum is σ = 125516304. Its totient is φ = 36457600.

The previous prime is 78250537. The next prime is 78250559. The reversal of 78250558 is 85505287.

It is a super-3 number, since 3×78250558³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 78250558.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78250559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7960 + ... + 14827.

It is an arithmetic number, because the mean of its divisors is an integer number (7844769).

Almost surely, 2^78250558 is an apocalyptic number.

78250558 is a deficient number, since it is larger than the sum of its proper divisors (47265746).

78250558 is a wasteful number, since it uses less digits than its factorization.

78250558 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22907.

The product of its (nonzero) digits is 112000, while the sum is 40.

The square root of 78250558 is about 8845.9345464456. The cubic root of 78250558 is about 427.7228786628.

The spelling of 78250558 in words is "seventy-eight million, two hundred fifty thousand, five hundred fifty-eight".