51546541 has 4 divisors (see below), whose sum is σ = 52252732. Its totient is φ = 50840352.

The previous prime is 51546529. The next prime is 51546613. The reversal of 51546541 is 14564515.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31877316 + 19669225 = 5646^2 + 4435^2 .

It is a cyclic number.

It is not a de Polignac number, because 51546541 - 2⁷ = 51546413 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 (51546511) 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, 352986 + ... + 353131.

It is an arithmetic number, because the mean of its divisors is an integer number (13063183).

Almost surely, 2^51546541 is an apocalyptic number.

It is an amenable number.

51546541 is a deficient number, since it is larger than the sum of its proper divisors (706191).

51546541 is an equidigital number, since it uses as much as digits as its factorization.

51546541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 706190.

The product of its digits is 12000, while the sum is 31.

The square root of 51546541 is about 7179.5919800501. The cubic root of 51546541 is about 372.1629845220.

The spelling of 51546541 in words is "fifty-one million, five hundred forty-six thousand, five hundred forty-one".