55150491 has 8 divisors (see below), whose sum is σ = 80218944. Its totient is φ = 33424520.

The previous prime is 55150409. The next prime is 55150507. The reversal of 55150491 is 19405155.

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

It is a cyclic number.

It is not a de Polignac number, because 55150491 - 2²⁵ = 21596059 is a prime.

It is a super-3 number, since 3×55150491³ (a number of 24 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (55150391) 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, 835581 + ... + 835646.

It is an arithmetic number, because the mean of its divisors is an integer number (10027368).

Almost surely, 2^55150491 is an apocalyptic number.

55150491 is a deficient number, since it is larger than the sum of its proper divisors (25068453).

55150491 is a wasteful number, since it uses less digits than its factorization.

55150491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671241.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 55150491 is about 7426.3376572844. The cubic root of 55150491 is about 380.6417848191.

The spelling of 55150491 in words is "fifty-five million, one hundred fifty thousand, four hundred ninety-one".