145259557 has 2 divisors, whose sum is σ = 145259558. Its totient is φ = 145259556.

The previous prime is 145259533. The next prime is 145259567. The reversal of 145259557 is 755952541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 109809441 + 35450116 = 10479^2 + 5954^2 .

It is a cyclic number.

It is not a de Polignac number, because 145259557 - 2¹¹ = 145257509 is a prime.

It is a super-2 number, since 2×145259557² = 42200677799672498, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145259507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72629778 + 72629779.

It is an arithmetic number, because the mean of its divisors is an integer number (72629779).

Almost surely, 2^145259557 is an apocalyptic number.

It is an amenable number.

145259557 is a deficient number, since it is larger than the sum of its proper divisors (1).

145259557 is an equidigital number, since it uses as much as digits as its factorization.

145259557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 315000, while the sum is 43.

The square root of 145259557 is about 12052.3672778421. The cubic root of 145259557 is about 525.6720729219.

It can be divided in two parts, 1452 and 59557, that added together give a square (61009 = 247²).

The spelling of 145259557 in words is "one hundred forty-five million, two hundred fifty-nine thousand, five hundred fifty-seven".