55161535 has 32 divisors (see below), whose sum is σ = 78382080. Its totient is φ = 36739200.

The previous prime is 55161473. The next prime is 55161553. The reversal of 55161535 is 53516155.

It is not a de Polignac number, because 55161535 - 2¹⁷ = 55030463 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 55161497 and 55161506.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 127770 + ... + 128200.

It is an arithmetic number, because the mean of its divisors is an integer number (2449440).

Almost surely, 2^55161535 is an apocalyptic number.

55161535 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

55161535 is a deficient number, since it is larger than the sum of its proper divisors (23220545).

55161535 is a wasteful number, since it uses less digits than its factorization.

55161535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639.

The product of its digits is 11250, while the sum is 31.

The square root of 55161535 is about 7427.0811898080. The cubic root of 55161535 is about 380.6671912251.

It can be divided in two parts, 55161 and 535, that added together give a square (55696 = 236²).

The spelling of 55161535 in words is "fifty-five million, one hundred sixty-one thousand, five hundred thirty-five".