190520531 has 4 divisors (see below), whose sum is σ = 194115312. Its totient is φ = 186925752.

The previous prime is 190520521. The next prime is 190520579. The reversal of 190520531 is 135025091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 135025091 = 3833 ⋅35227.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-190520531 is a prime.

It is a super-2 number, since 2×190520531² = 72596145465043922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 190520531.

It is not an unprimeable number, because it can be changed into a prime (190520501) 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, 1797311 + ... + 1797416.

It is an arithmetic number, because the mean of its divisors is an integer number (48528828).

Almost surely, 2^190520531 is an apocalyptic number.

190520531 is a deficient number, since it is larger than the sum of its proper divisors (3594781).

190520531 is an equidigital number, since it uses as much as digits as its factorization.

190520531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594780.

The product of its (nonzero) digits is 1350, while the sum is 26.

The square root of 190520531 is about 13802.9174814602. The cubic root of 190520531 is about 575.4142255311.

The spelling of 190520531 in words is "one hundred ninety million, five hundred twenty thousand, five hundred thirty-one".