78252583 has 8 divisors (see below), whose sum is σ = 83601920. Its totient is φ = 73026360.

The previous prime is 78252557. The next prime is 78252593. The reversal of 78252583 is 38525287.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78252583 is a prime.

It is a super-2 number, since 2×78252583² = 12246933492343778, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78252523) 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, 29463 + ... + 32008.

It is an arithmetic number, because the mean of its divisors is an integer number (10450240).

Almost surely, 2^78252583 is an apocalyptic number.

78252583 is a deficient number, since it is larger than the sum of its proper divisors (5349337).

78252583 is a wasteful number, since it uses less digits than its factorization.

78252583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61557.

The product of its digits is 134400, while the sum is 40.

The square root of 78252583 is about 8846.0490050644. The cubic root of 78252583 is about 427.7265682270.

The spelling of 78252583 in words is "seventy-eight million, two hundred fifty-two thousand, five hundred eighty-three".