248137957 has 4 divisors (see below), whose sum is σ = 253417536. Its totient is φ = 242858380.

The previous prime is 248137927. The next prime is 248137979. The reversal of 248137957 is 759731842.

248137957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 759731842 = 2 ⋅379865921.

It is a cyclic number.

It is not a de Polignac number, because 248137957 - 2¹⁹ = 247613669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (248137927) 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, 2639719 + ... + 2639812.

It is an arithmetic number, because the mean of its divisors is an integer number (63354384).

Almost surely, 2^248137957 is an apocalyptic number.

It is an amenable number.

248137957 is a deficient number, since it is larger than the sum of its proper divisors (5279579).

248137957 is an equidigital number, since it uses as much as digits as its factorization.

248137957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5279578.

The product of its digits is 423360, while the sum is 46.

The square root of 248137957 is about 15752.3952781791. The cubic root of 248137957 is about 628.3926076601.

The spelling of 248137957 in words is "two hundred forty-eight million, one hundred thirty-seven thousand, nine hundred fifty-seven".