55031249 has 16 divisors (see below), whose sum is σ = 70678272. Its totient is φ = 41646528.

The previous prime is 55031243. The next prime is 55031257. The reversal of 55031249 is 94213055.

It is not a de Polignac number, because 55031249 - 2¹² = 55027153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55031243) 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, 11054 + ... + 15239.

It is an arithmetic number, because the mean of its divisors is an integer number (4417392).

Almost surely, 2^55031249 is an apocalyptic number.

It is an amenable number.

55031249 is a deficient number, since it is larger than the sum of its proper divisors (15647023).

55031249 is a wasteful number, since it uses less digits than its factorization.

55031249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26336.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 55031249 is about 7418.3049950781. The cubic root of 55031249 is about 380.3672557501.

The spelling of 55031249 in words is "fifty-five million, thirty-one thousand, two hundred forty-nine".