55137783 has 8 divisors (see below), whose sum is σ = 77841648. Its totient is φ = 34596224.

The previous prime is 55137779. The next prime is 55137799. The reversal of 55137783 is 38773155.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55137783 - 2² = 55137779 is a prime.

It is a super-2 number, since 2×55137783² = 6080350228310178, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55137763) 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, 540516 + ... + 540617.

It is an arithmetic number, because the mean of its divisors is an integer number (9730206).

Almost surely, 2^55137783 is an apocalyptic number.

55137783 is a deficient number, since it is larger than the sum of its proper divisors (22703865).

55137783 is a wasteful number, since it uses less digits than its factorization.

55137783 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1081153.

The product of its digits is 88200, while the sum is 39.

The square root of 55137783 is about 7425.4820045570. The cubic root of 55137783 is about 380.6125462315.

The spelling of 55137783 in words is "fifty-five million, one hundred thirty-seven thousand, seven hundred eighty-three".