78499053 has 6 divisors (see below), whose sum is σ = 113387534. Its totient is φ = 52332696.

The previous prime is 78499039. The next prime is 78499063. The reversal of 78499053 is 35099487.

It can be written as a sum of positive squares in only one way, i.e., 72284004 + 6215049 = 8502^2 + 2493^2 .

It is not a de Polignac number, because 78499053 - 2⁵ = 78499021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78499063) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4361050 + ... + 4361067.

Almost surely, 2^78499053 is an apocalyptic number.

It is an amenable number.

78499053 is a deficient number, since it is larger than the sum of its proper divisors (34888481).

78499053 is a wasteful number, since it uses less digits than its factorization.

78499053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8722123 (or 8722120 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 78499053 is about 8859.9691308717. The cubic root of 78499053 is about 428.1751637670.

The spelling of 78499053 in words is "seventy-eight million, four hundred ninety-nine thousand, fifty-three".