655473101 has 4 divisors (see below), whose sum is σ = 667840572. Its totient is φ = 643105632.

The previous prime is 655473089. The next prime is 655473149. The reversal of 655473101 is 101374556.

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 572644900 + 82828201 = 23930^2 + 9101^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-655473101 is a prime.

It is a super-2 number, since 2×655473101² = 859289972269112402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655478101) 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, 6183656 + ... + 6183761.

It is an arithmetic number, because the mean of its divisors is an integer number (166960143).

Almost surely, 2^655473101 is an apocalyptic number.

It is an amenable number.

655473101 is a deficient number, since it is larger than the sum of its proper divisors (12367471).

655473101 is a wasteful number, since it uses less digits than its factorization.

655473101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12367470.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 655473101 is about 25602.2089086079. The cubic root of 655473101 is about 868.6636024288.

The spelling of 655473101 in words is "six hundred fifty-five million, four hundred seventy-three thousand, one hundred one".