55072154 has 8 divisors (see below), whose sum is σ = 82668180. Its totient is φ = 27516096.

The previous prime is 55072117. The next prime is 55072159. The reversal of 55072154 is 45127055.

It can be written as a sum of positive squares in 2 ways, for example, as 52896529 + 2175625 = 7273^2 + 1475^2 .

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

It is not an unprimeable number, because it can be changed into a prime (55072159) 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, 6269 + ... + 12224.

Almost surely, 2^55072154 is an apocalyptic number.

55072154 is a deficient number, since it is larger than the sum of its proper divisors (27596026).

55072154 is a wasteful number, since it uses less digits than its factorization.

55072154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19984.

The product of its (nonzero) digits is 7000, while the sum is 29.

The square root of 55072154 is about 7421.0615143657. The cubic root of 55072154 is about 380.4614753645.

The spelling of 55072154 in words is "fifty-five million, seventy-two thousand, one hundred fifty-four".