537161557 has 4 divisors (see below), whose sum is σ = 537997600. Its totient is φ = 536325516.

The previous prime is 537161551. The next prime is 537161561. The reversal of 537161557 is 755161735.

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: 755161735 = 5 ⋅151032347.

It is a cyclic number.

It is not a de Polignac number, because 537161557 - 2³ = 537161549 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 (537161551) 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, 417057 + ... + 418342.

It is an arithmetic number, because the mean of its divisors is an integer number (134499400).

Almost surely, 2^537161557 is an apocalyptic number.

It is an amenable number.

537161557 is a deficient number, since it is larger than the sum of its proper divisors (836043).

537161557 is an equidigital number, since it uses as much as digits as its factorization.

537161557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836042.

The product of its digits is 110250, while the sum is 40.

The square root of 537161557 is about 23176.7460399427. The cubic root of 537161557 is about 812.8959777789.

The spelling of 537161557 in words is "five hundred thirty-seven million, one hundred sixty-one thousand, five hundred fifty-seven".