78119051 has 4 divisors (see below), whose sum is σ = 82230600. Its totient is φ = 74007504.

The previous prime is 78119033. The next prime is 78119059. The reversal of 78119051 is 15091187.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 78119051 - 2²⁶ = 11010187 is a prime.

It is a super-2 number, since 2×78119051² = 12205172258281202, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 78118999 and 78119017.

It is not an unprimeable number, because it can be changed into a prime (78119059) 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, 2055746 + ... + 2055783.

It is an arithmetic number, because the mean of its divisors is an integer number (20557650).

Almost surely, 2^78119051 is an apocalyptic number.

78119051 is a deficient number, since it is larger than the sum of its proper divisors (4111549).

78119051 is a wasteful number, since it uses less digits than its factorization.

78119051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4111548.

The product of its (nonzero) digits is 2520, while the sum is 32.

The square root of 78119051 is about 8838.4982321659. The cubic root of 78119051 is about 427.4831355704.

The spelling of 78119051 in words is "seventy-eight million, one hundred nineteen thousand, fifty-one".