507242251 has 2 divisors, whose sum is σ = 507242252. Its totient is φ = 507242250.

The previous prime is 507242237. The next prime is 507242257. The reversal of 507242251 is 152242705.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 507242251 - 2²¹ = 505145099 is a prime.

It is not a weakly prime, because it can be changed into another prime (507242257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 253621125 + 253621126.

It is an arithmetic number, because the mean of its divisors is an integer number (253621126).

Almost surely, 2^507242251 is an apocalyptic number.

507242251 is a deficient number, since it is larger than the sum of its proper divisors (1).

507242251 is an equidigital number, since it uses as much as digits as its factorization.

507242251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5600, while the sum is 28.

The square root of 507242251 is about 22522.0392282759. The cubic root of 507242251 is about 797.5142902875.

Adding to 507242251 its reverse (152242705), we get a palindrome (659484956).

It can be divided in two parts, 50724 and 2251, that added together give a triangular number (52975 = T₃₂₅).

The spelling of 507242251 in words is "five hundred seven million, two hundred forty-two thousand, two hundred fifty-one".