78474053 has 4 divisors (see below), whose sum is σ = 89684640. Its totient is φ = 67263468.

The previous prime is 78474049. The next prime is 78474061. The reversal of 78474053 is 35047487.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35047487 = 4217 ⋅8311.

It is a cyclic number.

It is not a de Polignac number, because 78474053 - 2² = 78474049 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78473998 and 78474016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78474013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5605283 + ... + 5605296.

It is an arithmetic number, because the mean of its divisors is an integer number (22421160).

Almost surely, 2^78474053 is an apocalyptic number.

It is an amenable number.

78474053 is a deficient number, since it is larger than the sum of its proper divisors (11210587).

78474053 is a wasteful number, since it uses less digits than its factorization.

78474053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11210586.

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 78474053 is about 8858.5581783945. The cubic root of 78474053 is about 428.1297045534.

The spelling of 78474053 in words is "seventy-eight million, four hundred seventy-four thousand, fifty-three".