45393149 has 4 divisors (see below), whose sum is σ = 46958460. Its totient is φ = 43827840.

The previous prime is 45393143. The next prime is 45393151. The reversal of 45393149 is 94139354.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94139354 = 2 ⋅47069677.

It can be written as a sum of positive squares in 2 ways, for example, as 10936249 + 34456900 = 3307^2 + 5870^2 .

It is a cyclic number.

It is not a de Polignac number, because 45393149 - 2⁴ = 45393133 is a prime.

It is a super-2 number, since 2×45393149² = 4121075952272402, 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 (45393143) 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, 782612 + ... + 782669.

It is an arithmetic number, because the mean of its divisors is an integer number (11739615).

Almost surely, 2^45393149 is an apocalyptic number.

It is an amenable number.

45393149 is a deficient number, since it is larger than the sum of its proper divisors (1565311).

45393149 is a wasteful number, since it uses less digits than its factorization.

45393149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565310.

The product of its digits is 58320, while the sum is 38.

The square root of 45393149 is about 6737.4438031052. The cubic root of 45393149 is about 356.7221721440.

It can be divided in two parts, 4 and 5393149, that multiplied together give a triangular number (21572596 = T₆₅₆₈).

The spelling of 45393149 in words is "forty-five million, three hundred ninety-three thousand, one hundred forty-nine".