45971237 has 4 divisors (see below), whose sum is σ = 49507500. Its totient is φ = 42434976.

The previous prime is 45971231. The next prime is 45971243. The reversal of 45971237 is 73217954.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 73217954 = 2 ⋅36608977.

It is an interprime number because it is at equal distance from previous prime (45971231) and next prime (45971243).

It can be written as a sum of positive squares in 2 ways, for example, as 30846916 + 15124321 = 5554^2 + 3889^2 .

It is a cyclic number.

It is not a de Polignac number, because 45971237 - 2⁴ = 45971221 is a prime.

It is a super-2 number, since 2×45971237² = 4226709262620338, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 45971237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45971231) 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, 1768112 + ... + 1768137.

It is an arithmetic number, because the mean of its divisors is an integer number (12376875).

Almost surely, 2^45971237 is an apocalyptic number.

It is an amenable number.

45971237 is a deficient number, since it is larger than the sum of its proper divisors (3536263).

45971237 is a wasteful number, since it uses less digits than its factorization.

45971237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3536262.

The product of its digits is 52920, while the sum is 38.

The square root of 45971237 is about 6780.2092150611. The cubic root of 45971237 is about 358.2300909467.

The spelling of 45971237 in words is "forty-five million, nine hundred seventy-one thousand, two hundred thirty-seven".