7473775401 has 9 divisors (see below), whose sum is σ = 10795827991. Its totient is φ = 4982344032.

The previous prime is 7473775369. The next prime is 7473775403. The reversal of 7473775401 is 1045773747.

It is a happy number.

The square root of 7473775401 is 86451.

It is a perfect power (a square), and thus also a powerful number.

7473775401 is a `hidden beast` number, since 74 + 7 + 37 + 7 + 540 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 7210557225 + 263218176 = 84915^2 + 16224^2 .

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 7473775401 - 2⁵ = 7473775369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7473775403) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 244945 + ... + 273761.

Almost surely, 2^7473775401 is an apocalyptic number.

7473775401 is the 86451-st square number.

7473775401 is the 43226-th centered octagonal number.

It is an amenable number.

7473775401 is a deficient number, since it is larger than the sum of its proper divisors (3322052590).

7473775401 is an frugal number, since it uses more digits than its factorization.

7473775401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57640 (or 28820 counting only the distinct ones).

The product of its (nonzero) digits is 576240, while the sum is 45.

The cubic root of 7473775401 is about 1955.1496932972.

The spelling of 7473775401 in words is "seven billion, four hundred seventy-three million, seven hundred seventy-five thousand, four hundred one".