61572851 has 8 divisors (see below), whose sum is σ = 64603008. Its totient is φ = 58608000.

The previous prime is 61572839. The next prime is 61572877. The reversal of 61572851 is 15827516.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61572851 - 2¹⁰ = 61571827 is a prime.

It is not an unprimeable number, because it can be changed into a prime (61572881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14390 + ... + 18171.

It is an arithmetic number, because the mean of its divisors is an integer number (8075376).

Almost surely, 2^61572851 is an apocalyptic number.

61572851 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

61572851 is a deficient number, since it is larger than the sum of its proper divisors (3030157).

61572851 is a wasteful number, since it uses less digits than its factorization.

61572851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32653.

The product of its digits is 16800, while the sum is 35.

The square root of 61572851 is about 7846.8370060809. The cubic root of 61572851 is about 394.8781357763.

The spelling of 61572851 in words is "sixty-one million, five hundred seventy-two thousand, eight hundred fifty-one".