49801557 has 16 divisors (see below), whose sum is σ = 71729280. Its totient is φ = 30553152.

The previous prime is 49801547. The next prime is 49801561. The reversal of 49801557 is 75510894.

It is not a de Polignac number, because 49801557 - 2¹⁰ = 49800533 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49801537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12223 + ... + 15779.

It is an arithmetic number, because the mean of its divisors is an integer number (4483080).

Almost surely, 2^49801557 is an apocalyptic number.

It is an amenable number.

49801557 is a deficient number, since it is larger than the sum of its proper divisors (21927723).

49801557 is a wasteful number, since it uses less digits than its factorization.

49801557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932.

The product of its (nonzero) digits is 50400, while the sum is 39.

The square root of 49801557 is about 7057.0218222704. The cubic root of 49801557 is about 367.9151234822.

The spelling of 49801557 in words is "forty-nine million, eight hundred one thousand, five hundred fifty-seven".