54640245 has 16 divisors (see below), whose sum is σ = 95372352. Its totient is φ = 26492160.

The previous prime is 54640241. The next prime is 54640253. The reversal of 54640245 is 54204645.

It is not a de Polignac number, because 54640245 - 2² = 54640241 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (54640241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 165412 + ... + 165741.

It is an arithmetic number, because the mean of its divisors is an integer number (5960772).

Almost surely, 2^54640245 is an apocalyptic number.

54640245 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

54640245 is a deficient number, since it is larger than the sum of its proper divisors (40732107).

54640245 is a wasteful number, since it uses less digits than its factorization.

54640245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331172.

The product of its (nonzero) digits is 19200, while the sum is 30.

The square root of 54640245 is about 7391.9040172340. The cubic root of 54640245 is about 379.4642612084.

Subtracting from 54640245 its reverse (54204645), we obtain a square (435600 = 660²).

The spelling of 54640245 in words is "fifty-four million, six hundred forty thousand, two hundred forty-five".