49257945 has 48 divisors (see below), whose sum is σ = 93809664. Its totient is φ = 23712000.

The previous prime is 49257907. The next prime is 49257947. The reversal of 49257945 is 54975294.

It is not a de Polignac number, because 49257945 - 2¹¹ = 49255897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 49257945.

It is not an unprimeable number, because it can be changed into a prime (49257947) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 94285 + ... + 94805.

It is an arithmetic number, because the mean of its divisors is an integer number (1954368).

Almost surely, 2^49257945 is an apocalyptic number.

49257945 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

49257945 is a deficient number, since it is larger than the sum of its proper divisors (44551719).

49257945 is a wasteful number, since it uses less digits than its factorization.

49257945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 731 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 49257945 is about 7018.4004587940. The cubic root of 49257945 is about 366.5715561393.

The spelling of 49257945 in words is "forty-nine million, two hundred fifty-seven thousand, nine hundred forty-five".