149253555 has 64 divisors (see below), whose sum is σ = 276369408. Its totient is φ = 68069760.

The previous prime is 149253541. The next prime is 149253563. The reversal of 149253555 is 555352941.

It is not a de Polignac number, because 149253555 - 2⁶ = 149253491 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 253972 + ... + 254558.

It is an arithmetic number, because the mean of its divisors is an integer number (4318272).

Almost surely, 2^149253555 is an apocalyptic number.

149253555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

149253555 is a deficient number, since it is larger than the sum of its proper divisors (127115853).

149253555 is a wasteful number, since it uses less digits than its factorization.

149253555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 696.

The product of its digits is 135000, while the sum is 39.

The square root of 149253555 is about 12216.9372184685. The cubic root of 149253555 is about 530.4464672736.

The spelling of 149253555 in words is "one hundred forty-nine million, two hundred fifty-three thousand, five hundred fifty-five".