55772253 has 8 divisors (see below), whose sum is σ = 82625600. Its totient is φ = 37181484.

The previous prime is 55772251. The next prime is 55772267. The reversal of 55772253 is 35227755.

It is a happy number.

It is not a de Polignac number, because 55772253 - 2¹ = 55772251 is a prime.

It is a super-2 number, since 2×55772253² = 6221088409392018, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55772251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1032793 + ... + 1032846.

It is an arithmetic number, because the mean of its divisors is an integer number (10328200).

Almost surely, 2^55772253 is an apocalyptic number.

It is an amenable number.

55772253 is a deficient number, since it is larger than the sum of its proper divisors (26853347).

55772253 is a wasteful number, since it uses less digits than its factorization.

55772253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065648 (or 2065642 counting only the distinct ones).

The product of its digits is 73500, while the sum is 36.

The square root of 55772253 is about 7468.0822839602. The cubic root of 55772253 is about 382.0668838417.

The spelling of 55772253 in words is "fifty-five million, seven hundred seventy-two thousand, two hundred fifty-three".