248149557 has 48 divisors (see below), whose sum is σ = 388186240. Its totient is φ = 152285184.

The previous prime is 248149547. The next prime is 248149567. The reversal of 248149557 is 755941842.

It is an interprime number because it is at equal distance from previous prime (248149547) and next prime (248149567).

It is not a de Polignac number, because 248149557 - 2¹⁰ = 248148533 is a prime.

It is a super-3 number, since 3×248149557³ (a number of 26 digits) contains 333 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 (248149537) 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, 1285653 + ... + 1285845.

Almost surely, 2^248149557 is an apocalyptic number.

It is an amenable number.

248149557 is a deficient number, since it is larger than the sum of its proper divisors (140036683).

248149557 is a wasteful number, since it uses less digits than its factorization.

248149557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 391 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 248149557 is about 15752.7634718484. The cubic root of 248149557 is about 628.4023995796.

The spelling of 248149557 in words is "two hundred forty-eight million, one hundred forty-nine thousand, five hundred fifty-seven".