49125749 has 4 divisors (see below), whose sum is σ = 50323980. Its totient is φ = 47927520.

The previous prime is 49125743. The next prime is 49125799. The reversal of 49125749 is 94752194.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94752194 = 2 ⋅47376097.

It can be written as a sum of positive squares in 2 ways, for example, as 9498724 + 39627025 = 3082^2 + 6295^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-49125749 is a prime.

It is a super-2 number, since 2×49125749² = 4826678429622002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1198189 = 49125749 / (4 + 9 + 1 + 2 + 5 + 7 + 4 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49125743) 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, 599054 + ... + 599135.

It is an arithmetic number, because the mean of its divisors is an integer number (12580995).

Almost surely, 2^49125749 is an apocalyptic number.

It is an amenable number.

49125749 is a deficient number, since it is larger than the sum of its proper divisors (1198231).

49125749 is a wasteful number, since it uses less digits than its factorization.

49125749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1198230.

The product of its digits is 90720, while the sum is 41.

The square root of 49125749 is about 7008.9763161249. The cubic root of 49125749 is about 366.2433335614.

The spelling of 49125749 in words is "forty-nine million, one hundred twenty-five thousand, seven hundred forty-nine".