73814557 has 2 divisors, whose sum is σ = 73814558. Its totient is φ = 73814556.

The previous prime is 73814551. The next prime is 73814569. The reversal of 73814557 is 75541837.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 60933636 + 12880921 = 7806^2 + 3589^2 .

It is a cyclic number.

It is not a de Polignac number, because 73814557 - 2¹¹ = 73812509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73814551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36907278 + 36907279.

It is an arithmetic number, because the mean of its divisors is an integer number (36907279).

Almost surely, 2^73814557 is an apocalyptic number.

It is an amenable number.

73814557 is a deficient number, since it is larger than the sum of its proper divisors (1).

73814557 is an equidigital number, since it uses as much as digits as its factorization.

73814557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 117600, while the sum is 40.

The square root of 73814557 is about 8591.5398503411. The cubic root of 73814557 is about 419.4826528759.

The spelling of 73814557 in words is "seventy-three million, eight hundred fourteen thousand, five hundred fifty-seven".