51541499 has 4 divisors (see below), whose sum is σ = 53204160. Its totient is φ = 49878840.

The previous prime is 51541489. The next prime is 51541517. The reversal of 51541499 is 99414515.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51541499 - 2²⁴ = 34764283 is a prime.

It is a super-2 number, since 2×51541499² = 5313052238334002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51541409) 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, 831284 + ... + 831345.

It is an arithmetic number, because the mean of its divisors is an integer number (13301040).

Almost surely, 2^51541499 is an apocalyptic number.

51541499 is a deficient number, since it is larger than the sum of its proper divisors (1662661).

51541499 is a wasteful number, since it uses less digits than its factorization.

51541499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1662660.

The product of its digits is 32400, while the sum is 38.

The square root of 51541499 is about 7179.2408373031. The cubic root of 51541499 is about 372.1508498122.

The spelling of 51541499 in words is "fifty-one million, five hundred forty-one thousand, four hundred ninety-nine".