55167551 has 4 divisors (see below), whose sum is σ = 55396704. Its totient is φ = 54938400.

The previous prime is 55167529. The next prime is 55167559. The reversal of 55167551 is 15576155.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55167551 - 2¹⁸ = 54905407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55167559) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114215 + ... + 114696.

It is an arithmetic number, because the mean of its divisors is an integer number (13849176).

Almost surely, 2^55167551 is an apocalyptic number.

55167551 is a deficient number, since it is larger than the sum of its proper divisors (229153).

55167551 is a wasteful number, since it uses less digits than its factorization.

55167551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229152.

The product of its digits is 26250, while the sum is 35.

The square root of 55167551 is about 7427.4861830905. The cubic root of 55167551 is about 380.6810294342.

The spelling of 55167551 in words is "fifty-five million, one hundred sixty-seven thousand, five hundred fifty-one".