61603001 has 4 divisors (see below), whose sum is σ = 62088192. Its totient is φ = 61117812.

The previous prime is 61602977. The next prime is 61603027. The reversal of 61603001 is 10030616.

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 a de Polignac number, because none of the positive numbers 2^k-61603001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61603501) 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, 242405 + ... + 242658.

It is an arithmetic number, because the mean of its divisors is an integer number (15522048).

Almost surely, 2^61603001 is an apocalyptic number.

It is an amenable number.

61603001 is a deficient number, since it is larger than the sum of its proper divisors (485191).

61603001 is a wasteful number, since it uses less digits than its factorization.

61603001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485190.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 61603001 is about 7848.7579272137. The cubic root of 61603001 is about 394.9425777768.

Adding to 61603001 its reverse (10030616), we get a palindrome (71633617).

The spelling of 61603001 in words is "sixty-one million, six hundred three thousand, one".