196551537 has 48 divisors (see below), whose sum is σ = 337427328. Its totient is φ = 99095040.

The previous prime is 196551533. The next prime is 196551541. The reversal of 196551537 is 735155691.

It is an interprime number because it is at equal distance from previous prime (196551533) and next prime (196551541).

It is not a de Polignac number, because 196551537 - 2² = 196551533 is a prime.

It is not an unprimeable number, because it can be changed into a prime (196551533) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 143737 + ... + 145097.

It is an arithmetic number, because the mean of its divisors is an integer number (7029736).

Almost surely, 2^196551537 is an apocalyptic number.

It is an amenable number.

196551537 is a deficient number, since it is larger than the sum of its proper divisors (140875791).

196551537 is a wasteful number, since it uses less digits than its factorization.

196551537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1430 (or 1407 counting only the distinct ones).

The product of its digits is 141750, while the sum is 42.

The square root of 196551537 is about 14019.6839122713. The cubic root of 196551537 is about 581.4229202709.

It can be divided in two parts, 19 and 6551537, that added together give a palindrome (6551556).

The spelling of 196551537 in words is "one hundred ninety-six million, five hundred fifty-one thousand, five hundred thirty-seven".