49289257 has 8 divisors (see below), whose sum is σ = 50790600. Its totient is φ = 47802240.

The previous prime is 49289243. The next prime is 49289267. The reversal of 49289257 is 75298294.

It can be written as a sum of positive squares in 4 ways, for example, as 14017536 + 35271721 = 3744^2 + 5939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 49289257 - 2⁷ = 49289129 is a prime.

It is a super-2 number, since 2×49289257² = 4858861711224098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (49289237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3619 + ... + 10567.

It is an arithmetic number, because the mean of its divisors is an integer number (6348825).

Almost surely, 2^49289257 is an apocalyptic number.

It is an amenable number.

49289257 is a deficient number, since it is larger than the sum of its proper divisors (1501343).

49289257 is a wasteful number, since it uses less digits than its factorization.

49289257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7163.

The product of its digits is 362880, while the sum is 46.

The square root of 49289257 is about 7020.6308121137. The cubic root of 49289257 is about 366.6492130351.

The spelling of 49289257 in words is "forty-nine million, two hundred eighty-nine thousand, two hundred fifty-seven".