55475745 has 32 divisors (see below), whose sum is σ = 97638912. Its totient is φ = 26725632.

The previous prime is 55475723. The next prime is 55475767. The reversal of 55475745 is 54757455.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (55475723) and next prime (55475767).

It is not a de Polignac number, because 55475745 - 2⁶ = 55475681 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55475697 and 55475706.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6139 + ... + 12191.

It is an arithmetic number, because the mean of its divisors is an integer number (3051216).

Almost surely, 2^55475745 is an apocalyptic number.

It is an amenable number.

55475745 is a deficient number, since it is larger than the sum of its proper divisors (42163167).

55475745 is a wasteful number, since it uses less digits than its factorization.

55475745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6121.

The product of its digits is 490000, while the sum is 42.

The square root of 55475745 is about 7448.2041459670. The cubic root of 55475745 is about 381.3886060571.

It can be divided in two parts, 55 and 475745, that added together give a triangular number (475800 = T₉₇₅).

The spelling of 55475745 in words is "fifty-five million, four hundred seventy-five thousand, seven hundred forty-five".