245002157 has 4 divisors (see below), whose sum is σ = 245906496. Its totient is φ = 244097820.

The previous prime is 245002151. The next prime is 245002159. The reversal of 245002157 is 751200542.

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: 751200542 = 2 ⋅375600271.

It is a cyclic number.

It is not a de Polignac number, because 245002157 - 2¹⁴ = 244985773 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 (245002151) 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, 451763 + ... + 452304.

It is an arithmetic number, because the mean of its divisors is an integer number (61476624).

Almost surely, 2^245002157 is an apocalyptic number.

It is an amenable number.

245002157 is a deficient number, since it is larger than the sum of its proper divisors (904339).

245002157 is an equidigital number, since it uses as much as digits as its factorization.

245002157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904338.

The product of its (nonzero) digits is 2800, while the sum is 26.

The square root of 245002157 is about 15652.5447451844. The cubic root of 245002157 is about 625.7343108955.

Adding to 245002157 its reverse (751200542), we get a palindrome (996202699).

The spelling of 245002157 in words is "two hundred forty-five million, two thousand, one hundred fifty-seven".