61952857 has 4 divisors (see below), whose sum is σ = 62311140. Its totient is φ = 61594576.

The previous prime is 61952843. The next prime is 61952867. The reversal of 61952857 is 75825916.

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 51897616 + 10055241 = 7204^2 + 3171^2 .

It is a cyclic number.

It is not a de Polignac number, because 61952857 - 2¹¹ = 61950809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61952867) 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, 178882 + ... + 179227.

It is an arithmetic number, because the mean of its divisors is an integer number (15577785).

Almost surely, 2^61952857 is an apocalyptic number.

It is an amenable number.

61952857 is a deficient number, since it is larger than the sum of its proper divisors (358283).

61952857 is a wasteful number, since it uses less digits than its factorization.

61952857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 358282.

The product of its digits is 151200, while the sum is 43.

The square root of 61952857 is about 7871.0137212433. The cubic root of 61952857 is about 395.6888200025.

The spelling of 61952857 in words is "sixty-one million, nine hundred fifty-two thousand, eight hundred fifty-seven".