55355031 has 6 divisors (see below), whose sum is σ = 79957280. Its totient is φ = 36903348.

The previous prime is 55355023. The next prime is 55355051. The reversal of 55355031 is 13055355.

It is not a de Polignac number, because 55355031 - 2³ = 55355023 is a prime.

It is a super-2 number, since 2×55355031² = 6128358914021922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55354986 and 55355004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55355011) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3075271 + ... + 3075288.

Almost surely, 2^55355031 is an apocalyptic number.

55355031 is a deficient number, since it is larger than the sum of its proper divisors (24602249).

55355031 is a wasteful number, since it uses less digits than its factorization.

55355031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6150565 (or 6150562 counting only the distinct ones).

The product of its (nonzero) digits is 5625, while the sum is 27.

The square root of 55355031 is about 7440.0961687333. The cubic root of 55355031 is about 381.1117740959. Note that the first 3 decimals are identical.

The spelling of 55355031 in words is "fifty-five million, three hundred fifty-five thousand, thirty-one".