503505400157 has 2 divisors, whose sum is σ = 503505400158. Its totient is φ = 503505400156.

The previous prime is 503505400007. The next prime is 503505400201. The reversal of 503505400157 is 751004505305.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 282535834681 + 220969565476 = 531541^2 + 470074^2 .

It is a cyclic number.

It is not a de Polignac number, because 503505400157 - 2²² = 503501205853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (503505490157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 251752700078 + 251752700079.

It is an arithmetic number, because the mean of its divisors is an integer number (251752700079).

Almost surely, 2^503505400157 is an apocalyptic number.

It is an amenable number.

503505400157 is a deficient number, since it is larger than the sum of its proper divisors (1).

503505400157 is an equidigital number, since it uses as much as digits as its factorization.

503505400157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52500, while the sum is 35.

The spelling of 503505400157 in words is "five hundred three billion, five hundred five million, four hundred thousand, one hundred fifty-seven".