73801957 has 4 divisors (see below), whose sum is σ = 74038060. Its totient is φ = 73565856.

The previous prime is 73801933. The next prime is 73801961. The reversal of 73801957 is 75910837.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75910837 = 211 ⋅359767.

It can be written as a sum of positive squares in 2 ways, for example, as 32251041 + 41550916 = 5679^2 + 6446^2 .

It is a cyclic number.

It is not a de Polignac number, because 73801957 - 2¹¹ = 73799909 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73801997) 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 3 ways as a sum of consecutive naturals, for example, 117582 + ... + 118207.

It is an arithmetic number, because the mean of its divisors is an integer number (18509515).

Almost surely, 2^73801957 is an apocalyptic number.

It is an amenable number.

73801957 is a deficient number, since it is larger than the sum of its proper divisors (236103).

73801957 is a wasteful number, since it uses less digits than its factorization.

73801957 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236102.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 73801957 is about 8590.8065395515. The cubic root of 73801957 is about 419.4587832292.

The spelling of 73801957 in words is "seventy-three million, eight hundred one thousand, nine hundred fifty-seven".