78260553 has 16 divisors (see below), whose sum is σ = 132504960. Its totient is φ = 44720208.

The previous prime is 78260551. The next prime is 78260561. The reversal of 78260553 is 35506287.

It is not a de Polignac number, because 78260553 - 2¹ = 78260551 is a prime.

It is a super-2 number, since 2×78260553² = 12249428311731618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78260551) 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 15 ways as a sum of consecutive naturals, for example, 206850 + ... + 207227.

It is an arithmetic number, because the mean of its divisors is an integer number (8281560).

Almost surely, 2^78260553 is an apocalyptic number.

It is an amenable number.

78260553 is a deficient number, since it is larger than the sum of its proper divisors (54244407).

78260553 is a wasteful number, since it uses less digits than its factorization.

78260553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414093 (or 414087 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 78260553 is about 8846.4994771944. The cubic root of 78260553 is about 427.7410890044.

The spelling of 78260553 in words is "seventy-eight million, two hundred sixty thousand, five hundred fifty-three".