55551651 has 8 divisors (see below), whose sum is σ = 74961600. Its totient is φ = 36588072.

The previous prime is 55551637. The next prime is 55551673. The reversal of 55551651 is 15615555.

55551651 = 494² + 495² + ... + 659².

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

It is not a de Polignac number, because 55551651 - 2⁵ = 55551619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55551151) 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, 111301 + ... + 111798.

It is an arithmetic number, because the mean of its divisors is an integer number (9370200).

Almost surely, 2^55551651 is an apocalyptic number.

55551651 is a deficient number, since it is larger than the sum of its proper divisors (19409949).

55551651 is a wasteful number, since it uses less digits than its factorization.

55551651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223185.

The product of its digits is 18750, while the sum is 33.

The square root of 55551651 is about 7453.2979948476. The cubic root of 55551651 is about 381.5624747743.

The spelling of 55551651 in words is "fifty-five million, five hundred fifty-one thousand, six hundred fifty-one".