78383501 has 16 divisors (see below), whose sum is σ = 93396096. Its totient is φ = 64380096.

The previous prime is 78383489. The next prime is 78383509. The reversal of 78383501 is 10538387.

It is a cyclic number.

It is not a de Polignac number, because 78383501 - 2¹⁴ = 78367117 is a prime.

It is a super-2 number, since 2×78383501² = 12287946458034002, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78383509) 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, 15095 + ... + 19611.

It is an arithmetic number, because the mean of its divisors is an integer number (5837256).

Almost surely, 2^78383501 is an apocalyptic number.

It is an amenable number.

78383501 is a deficient number, since it is larger than the sum of its proper divisors (15012595).

78383501 is a wasteful number, since it uses less digits than its factorization.

78383501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4628.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 78383501 is about 8853.4457133932. The cubic root of 78383501 is about 427.9649667805.

The spelling of 78383501 in words is "seventy-eight million, three hundred eighty-three thousand, five hundred one".