154621051 has 4 divisors (see below), whose sum is σ = 166514992. Its totient is φ = 142727112.

The previous prime is 154621043. The next prime is 154621057. The reversal of 154621051 is 150126451.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 150126451 = 23 ⋅6527237.

It is a cyclic number.

It is not a de Polignac number, because 154621051 - 2³ = 154621043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (154621057) 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, 5946951 + ... + 5946976.

It is an arithmetic number, because the mean of its divisors is an integer number (41628748).

Almost surely, 2^154621051 is an apocalyptic number.

154621051 is a deficient number, since it is larger than the sum of its proper divisors (11893941).

154621051 is a wasteful number, since it uses less digits than its factorization.

154621051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11893940.

The product of its (nonzero) digits is 1200, while the sum is 25.

The square root of 154621051 is about 12434.6713265772. The cubic root of 154621051 is about 536.7304159361.

The spelling of 154621051 in words is "one hundred fifty-four million, six hundred twenty-one thousand, fifty-one".