61570001 has 4 divisors (see below), whose sum is σ = 62167872. Its totient is φ = 60972132.

The previous prime is 61569997. The next prime is 61570007. The reversal of 61570001 is 10007516.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 61570001 - 2² = 61569997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61570007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 298781 + ... + 298986.

It is an arithmetic number, because the mean of its divisors is an integer number (15541968).

Almost surely, 2^61570001 is an apocalyptic number.

It is an amenable number.

61570001 is a deficient number, since it is larger than the sum of its proper divisors (597871).

61570001 is a wasteful number, since it uses less digits than its factorization.

61570001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 597870.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 61570001 is about 7846.6554021443. The cubic root of 61570001 is about 394.8720431558.

Adding to 61570001 its reverse (10007516), we get a palindrome (71577517).

The spelling of 61570001 in words is "sixty-one million, five hundred seventy thousand, one".