78503061 has 16 divisors (see below), whose sum is σ = 128825984. Its totient is φ = 41408064.

The previous prime is 78503053. The next prime is 78503063. The reversal of 78503061 is 16030587.

It is not a de Polignac number, because 78503061 - 2³ = 78503053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78503063) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143506 + ... + 144051.

It is an arithmetic number, because the mean of its divisors is an integer number (8051624).

Almost surely, 2^78503061 is an apocalyptic number.

It is an amenable number.

78503061 is a deficient number, since it is larger than the sum of its proper divisors (50322923).

78503061 is a wasteful number, since it uses less digits than its factorization.

78503061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287580.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 78503061 is about 8860.1953138743. The cubic root of 78503061 is about 428.1824508904.

The spelling of 78503061 in words is "seventy-eight million, five hundred three thousand, sixty-one".